Best Ctsc in 2026

✅SAFETY COMES FIRST: Our zip line kits includes a 5.9 Foot Stainless Steel Spring Brake as a braking system, so the zipline does not end at a sudden stop. When it comes to kids' outdoor activities and playground equipment, quality means the world to parents- that’s why we have carefully constructed a product that guarantees complete safety for our little ones. This zip line meets the international quality standards (RoHS & CE) and can easily hold up to 250 lbs!

✅ PERFECT HOLIDAY GIFT IDEA WHICH YOUR KIDS MAY REMEMBER FOR A LIFETIME: Are you looking for a wonderful outdoor activity or a birthday gift that will help you bond with your kids and enjoy unforgettable moments? Look no further. Now you can spend endless hours of backyard fun with your children. Your backyard will instantly become a stunning amusement park, and you will become the neighbourhood’s coolest parent!

✅ OFFER CUSTOMIZED SOLUTIONS: Our zipline kit come with a 7 foot sling cable and 95 foot main cable, the 7 foot sling cable was used to wrapped around the start tree, and the 95 foot main cable should cover the distance between the two trees and the end tree's circumference, if the trees in your backyard are too far apart, CONTACT Us FIRST, simply provide us with the exact distance, and then we will develop a personalized zip line kit for you!

✅SAFETY COMES FIRST: Our zip line kits includes a 5.9 Foot Stainless Steel Spring Brake as a braking system, so the zipline does not end at a sudden stop. When it comes to kids' outdoor activities and playground equipment, quality means the world to parents- that’s why we have carefully constructed a product that guarantees complete safety for our little ones. This zip line meets the international quality standards (RoHS & CE) and can easily hold up to 250 lbs!

✅ PERFECT HOLIDAY GIFT IDEA WHICH YOUR KIDS MAY REMEMBER FOR A LIFETIME: Are you looking for a wonderful outdoor activity or a birthday gift that will help you bond with your kids and enjoy unforgettable moments? Look no further. Now you can spend endless hours of backyard fun with your children. Your backyard will instantly become a stunning amusement park, and you will become the neighbourhood’s coolest parent!

✅ OFFER CUSTOMIZED SOLUTIONS: Our zipline kit come with a 7 foot sling cable and 95 foot main cable, the 7 foot sling cable was used to wrapped around the start tree, and the 95 foot main cable should cover the distance between the two trees and the end tree's circumference, if the trees in your backyard are too far apart, CONTACT Us FIRST, simply provide us with the exact distance, and then we will develop a personalized zip line kit for you!

LONG-LASTING - Our turnbuckle uses hot dipped galvanization to protect the steel from humidity, corrosion, and other elements. No other kind of protective coating can give this much longeviy to steel, so you’re sure to use our turnbuckle for years!

SAFETY TESTED - Safety is our top priority. All of our products, including this galvanized steel turnbuckle, have passed EN71 test, CE and RoHS safety tests.

COMES WITH NUTS AND BOLTS - This jaw and jaw turnbuckle comes with nuts and bolts that are made of the same durable hot tipped galvanized steel.

Zip Line Sling Cable

Ergonomically Designed - Our soil sifter outer Size is 21.3” x 18”x 1.57” with 1/4” hardware cloth, the wood makes it very comfortable and manageable to hold.

Excellent Strength - Our garden sifter mesh screens is made of durable metal and stainless steel, which guarantees excellent strength.

Ultra-Light - The dirt sifter wire mesh is 1/4in x 1/4 in, suitable for most usage conditions

✅SAFETY COMES FIRST: Our zip line kits includes a 5.9 Foot Stainless Steel Spring Brake as a braking system, so the zipline does not end at a sudden stop. When it comes to kids' outdoor activities and playground equipment, quality means the world to parents- that’s why we have carefully constructed a product that guarantees complete safety for our little ones. This zip line meets the international quality standards (RoHS & CE) and can easily hold up to 250 lbs!

✅ PERFECT HOLIDAY GIFT IDEA WHICH YOUR KIDS MAY REMEMBER FOR A LIFETIME: Are you looking for a wonderful outdoor activity or a birthday gift that will help you bond with your kids and enjoy unforgettable moments? Look no further. Now you can spend endless hours of backyard fun with your children. Your backyard will instantly become a stunning amusement park, and you will become the neighbourhood’s coolest parent!

✅ OFFER CUSTOMIZED SOLUTIONS: Our zipline kit come with a 7 foot sling cable and 95 foot main cable, the 7 foot sling cable was used to wrapped around the start tree, and the 95 foot main cable should cover the distance between the two trees and the end tree's circumference, if the trees in your backyard are too far apart, CONTACT Us FIRST, simply provide us with the exact distance, and then we will develop a personalized zip line kit for you!

✅ INSTALL YOUR ZIPLINE LIKE A PRO: Take all the fuss out of installing your backyard zip line for your kids with the CTSC all-inclusive zip line tensioning kit, which includes everything you need! Loading capacity: 660LB.

✅ SAVE YOUR PRECIOUS TIME & EFFORT: Make tensioning and installing your commercial zipline (up to 200') a one-man job with our ergonomic cable puller, sturdy cable grip and convenient tree sling!

✅ MAKE LIFE EASIER WITH OUR RATCHET: The heavy-duty ratchet features a robust two-way winch that will tension your cable and hold it in position while you connect the other end without any fuss!

✅SAFETY COMES FIRST: Our zip line kits includes a 5.9 Foot Stainless Steel Spring Brake as a braking system, so the zipline does not end at a sudden stop. When it comes to kids' outdoor activities and playground equipment, quality means the world to parents- that’s why we have carefully constructed a product that guarantees complete safety for our little ones. This zip line meets the international quality standards (RoHS & CE) and can easily hold up to 250 lbs!

✅ PERFECT HOLIDAY GIFT IDEA WHICH YOUR KIDS MAY REMEMBER FOR A LIFETIME: Are you looking for a wonderful outdoor activity or a birthday gift that will help you bond with your kids and enjoy unforgettable moments? Look no further. Now you can spend endless hours of backyard fun with your children. Your backyard will instantly become a stunning amusement park, and you will become the neighbourhood’s coolest parent!

✅ OFFER CUSTOMIZED SOLUTIONS: Our zipline kit come with a 7 foot sling cable and 75 foot main cable, the 7 foot sling cable was used to wrapped around the start tree, and the 75 foot main cable should cover the distance between the two trees and the end tree's circumference, if the trees in your backyard are too far apart, CONTACT Us FIRST, simply provide us with the exact distance, and then we will develop a personalized zip line kit for you!

✅SAFETY COMES FIRST: Our zip line kits includes a 5.9 Foot Stainless Steel Spring Brake as a braking system, so the zipline does not end at a sudden stop. When it comes to kids' outdoor activities and playground equipment, quality means the world to parents- that’s why we have carefully constructed a product that guarantees complete safety for our little ones. This zip line meets the international quality standards (RoHS & CE) and can easily hold up to 250 lbs!

✅ PERFECT HOLIDAY GIFT IDEA WHICH YOUR KIDS MAY REMEMBER FOR A LIFETIME: Are you looking for a wonderful outdoor activity or a birthday gift that will help you bond with your kids and enjoy unforgettable moments? Look no further. Now you can spend endless hours of backyard fun with your children. Your backyard will instantly become a stunning amusement park, and you will become the neighbourhood’s coolest parent!

✅ OFFER CUSTOMIZED SOLUTIONS: Our zipline kit come with a 7 foot sling cable and 95 foot main cable, the 7 foot sling cable was used to wrapped around the start tree, and the 95 foot main cable should cover the distance between the two trees and the end tree's circumference, if the trees in your backyard are too far apart, CONTACT Us FIRST, simply provide us with the exact distance, and then we will develop a personalized zip line kit for you!

✅SAFETY COMES FIRST: Our zip line kits includes a 5.9 Foot Stainless Steel Spring Brake as a braking system, so the zipline does not end at a sudden stop. When it comes to kids' outdoor activities and playground equipment, quality means the world to parents- that’s why we have carefully constructed a product that guarantees complete safety for our little ones. This zip line meets the international quality standards (RoHS & CE) and can easily hold up to 250 lbs!

✅ PERFECT HOLIDAY GIFT IDEA WHICH YOUR KIDS MAY REMEMBER FOR A LIFETIME: Are you looking for a wonderful outdoor activity or a birthday gift that will help you bond with your kids and enjoy unforgettable moments? Look no further. Now you can spend endless hours of backyard fun with your children. Your backyard will instantly become a stunning amusement park, and you will become the neighbourhood’s coolest parent!

✅ OFFER CUSTOMIZED SOLUTIONS: Our zipline kit come with a 7 foot sling cable and 95 foot main cable, the 7 foot sling cable was used to wrapped around the start tree, and the 95 foot main cable should cover the distance between the two trees and the end tree's circumference, if the trees in your backyard are too far apart, CONTACT Us FIRST, simply provide us with the exact distance, and then we will develop a personalized zip line kit for you!

PLAY IN THE AIR - slackers is a Colorado-based company that focuses on kids' active play products to help you and your children get active and PLAY IN THE AIR. Our ziplines and zip line accessories are great at inspiring children to play outside.

ZIPSPRING BRAKE - The slackers 70 ft Hawk Series Zipline includes the signature Zipspring Bake system. The powder-coated steel spring brake protects the line, the trolley, and the rider with a smooth, safe finish to the end of each ride.

QUALITY STANDARD - At slackers, quality is our top priority. We use only the best materials for all our outdoor play equipment. The slackers Hawk Series Zipline Kits are designed for years of reliable, safe, fun enjoyment.

【Safety First】Safe strap + Adjustable Safety Belt + Seat + Reliable Braking System for Maximum Security. Our 60mm swing seats are more durable and thicker than other 38 mm swings,which can hold up to 330 lbs. The length is adjustable from 3.6ft to 6.5ft by adjusting buckle, so it will suitabale for kids of different ages and sizes. Our zipline kit with harness has much more safety than the zipline kit with seat.You will never need to worried about falling when having fun!

【High Quality Steel Cable】Trsmima Ziplines for Backyards is designed with your children’s safety top of mind .Our 120FT high-altitude zipline is made ultra-strong, galvanized aircraft stainless steel cable,. With durability and weather resistance, Sling Cable comes with zipline tree protect tube to avoid any hurting to your trees. It can easily support 330 pounds! The service life is up to several years!

【Non-slippery Rubber Grips, Super Smooth Zipline Trolley】 The zip-line pulley is made of double stainless steel, with super-slip, sealed ball bearings, long wear-resistant alloy pulleys, steel side plates and soft grips. Just open from the bottom, it can be firmly fixed to the strop, and can be installed from any part of the cable. When you finish the game to take home, you can easily remove it.

【Safety First】Safe strap + Adjustable Safety Belt + Seat + Reliable Braking System for Maximum Security. Our 60mm swing seats are more durable and thicker than other 38 mm swings,which can hold up to 330 lbs. The length is adjustable from 3.6ft to 6.5ft by adjusting buckle, so it will suitabale for kids of different ages and sizes. Our zipline kit with harness has much more safety than the zipline kit with seat.You will never need to worried about falling when having fun!

【High Quality Steel Cable】Trsmima Ziplines for Backyards is designed with your children’s safety top of mind .Our 100FT high-altitude zipline is made ultra-strong, galvanized aircraft stainless steel cable,. With durability and weather resistance, Sling Cable comes with zipline tree protect tube to avoid any hurting to your trees. It can easily support 330 pounds! The service life is up to several years!

【Non-slippery Rubber Grips, Super Smooth Zipline Trolley】 The zip-line pulley is made of double stainless steel, with super-slip, sealed ball bearings, long wear-resistant alloy pulleys, steel side plates and soft grips. Just open from the bottom, it can be firmly fixed to the strop, and can be installed from any part of the cable. When you finish the game to take home, you can easily remove it.

Upgraded Zipline Kit: Ultra strong stainless steel cable, stainless steel spring brake, fall prevention equipment, little bear pulley, tree protectors, hand bag, stainless steel accessories.

Upgraded Security Protection: Adjustable thick seat can hold up to 350lbs. Safe operation instruction, non slippery rubber grips, fall prevention equipment and reliable braking system provide maximum safety guarantee.

Upgraded Design: Zipline pulley is made of double stainless steel, with super slip, sealed ball bearings, long wear resistant. Keep your kids healthy and balanced when they will be gliding in the air.

【Become a Real Warrior】 Slide your way to the top with this Pulley Set! Slackline Pulley is specially designed for kids over 3 years old, learn to train like a real warrior, overcome all challenges and be the warrior in the most fun ways.

【Easy Setup & Safety】-Clear user manual instruction takes you minutes to set up all the things. Choosing the premium material with superb craftsmanship and repeated rigorous testing, just in order to provide the quality and safe products to our kids. The slackline can be maximum load 250 LBS, the Slackline Pulley can be maximum load 6000 LBS, suitable for not only the age above 3 years old boys and girls with adult’s supervision, but also for adults.

【Craftsmanship】- Hooroor Slackline Pulley is made of stainless steel, with sealed ball bearings, alloy pulleys. Just open from the bottom, it can be firmly fixed to the strop, and can be installed from any part of the Slackline.When you finish the game to take home, you can easily remove it.

Safety First: Disc seat plus harness, spring brake, non-slip rubber trolley grips, turnbuckle safety cable - these are just a few of the safety features that every Dragon Zip Line Kit has which is not found in any backyard zip line kit in the market. We made sure that our zipline will provide more safety to ensure that you will be worry-free while your kids enjoy every zip line ride they’ll have.

Fun for All: For a zip line that can hold up to 250 lbs, this kit can be enjoyed by kids of all ages. This outdoor kit has a high-quality disc seat and a lanyard that is adjustable to suit the user’s size. Even the harness is adjustable to fit the smallest one in the family!

High Quality: The longest stainless steel cable at 110ft and stainless steel components - this kit will definitely hold the test of time! We also included components that are not usually found in a basic kit because we want to make sure that you have everything you need in one box that will make your kids have the best and safest riding experience for a long time.

Upgraded Zipline Kit: Ultra strong stainless steel cable, stainless steel spring brake, fall prevention equipment, little bear pulley, tree protectors, hand bag, stainless steel accessories.

Upgraded Security Protection: Adjustable thick seat can hold up to 350lbs. Safe operation instruction, non slippery rubber grips, fall prevention equipment and reliable braking system provide maximum safety guarantee.

Upgraded Design: Zipline pulley is made of double stainless steel, with super slip, sealed ball bearings, long wear resistant. Keep your kids healthy and balanced when they will be gliding in the air.

BACKYARD ZIPLINE KIT: At 80 feet, our adventure Zipline is a great length for kids to have an exciting ride, but will fit easily in backyards. It's the perfect outdoor toy for active play!

STURDY & SAFE: Designed with safety and durability in mind, the kit includes an 80-foot galvanized steel cable, two tree protectors (one pre-assembled on cable), fully enclosed carriage with non-slip handles, adjustable and removable seat, rubber stopper, and hanging hardware. Fully enclosed carriage keeps little fingers safe. Adult supervision is required.

ADJUSTABLE SEAT: Our zipline can easily accommodate kids of different heights with its adjustable seat (ages 8 and up, max. weight 250 lbs.), and the seat can be removed for an even bigger thrill. Just set the seat at a height where riders can comfortably hold the non-slip handles, and they're ready to go.

✔ THE HYPONIX ZIPLINE KIT... Finally, a safe, affordable way to zipline in your backyard! Fast, Fun and Affordable. Our zipline kit is made from premium stainless steel components which combat rust and corrosion

✔ FAIL SAFE TURNBUCKLE SYSTEM ... We believe in going above and beyond safety standards. We provide a backup turnbuckle safety system that is easy to install, the safety of your loved ones is our first priority. Also, we included a seat belt to ensure the maximum safety of the rider

✔ SAFEST SPRING BRAKE ... A longer 7.5' brake with rubber ends that wont crack compared to plastic ends. The smooth 7.5' spring brake ensures your children are safe at all time

✔ THE HYPONIX ZIPLINE KIT... Finally, a safe, affordable way to zipline in your backyard! Fast, Fun and Affordable. Our zipline kit is made from premium stainless steel components which combat rust and corrosion

✔ FAIL SAFE TURNBUCKLE SYSTEM ... We believe in going above and beyond safety standards. We provide a backup turnbuckle safety system that is easy to install, the safety of your loved ones is our first priority. Also, we included a seat belt to ensure the maximum safety of the rider

✔ MONKEY TREE CLIMBERS ... Let your kids climb up trees with ease! You receive 4 ratchets and 8 large rock climbing holds!

A FAST-PACED ENVIRONMENT: Good morning! Are you ready for training? Embarking on dangerous missions around the world isn’t easy, you know. But something tells us you have the guts to make it happen. We’re presenting you with Hearthsong’s 100-Foot Green Galvanized Steel Backyard Zipline Kit, so use it well

THE TOP ZIPLINER: The Hearthsong backyard zipline kit makes you feel like a flying bird on top of the world without ever compromising your safety. Included in the kit: 100-foot galvanized steel cable, fully enclosed carriage (no finger-chomping) with non-slip handles, adjustable (ages 8 and up, max. weight 250 lbs.) and removable seat with rope, two tree protectors, rubber brake, and hanging hardware. That’s one top-of-the-line zipline!

A CASE OF THE ZOOMIES: You don’t have to be an agent in training to enjoy this. Do you want to zoom like the fastest car of the future with zippy wings? Just jump on the zipline seat, grab hold of the handles, hold on to your socks, and ZOOM!

Safety is No.1 - The outdoor zipline for backyard with a harness is a safer and sturdier option than the typical zipline kit with seat. The zipline brake is made with thicker steel then the rest to ensure a safe ride for kids and adults up to 330lbs. The adjustable harness allows for a snug fit to ensure that your ride will be safe, smooth, and fun!

Stainless Steel Parts - In outdoor activities and playground equipment,security is the most important consideration for parents.Therefore,our zip lines for backyards kids is made of SUS304 stainless steel which is durable and sturdy.

Easy to Assemble - Edostory zipline kits for backyard are partly assembled. All you need to do is find two sturdy trees, wrap them around, and let your kids straddle the seat, grab the handles, and go. Then you can have endless hours of backyard fun with your little ones.

Safety is No.1 - The outdoor zipline for backyard with a harness is a safer and sturdier option than the typical zipline kit with seat. The zipline brake is made with thicker steel then the rest to ensure a safe ride for kids and adults up to 330lbs. The adjustable harness allows for a snug fit to ensure that your ride will be safe, smooth, and fun!

Stainless Steel Parts - In outdoor activities and playground equipment,security is the most important consideration for parents.Therefore,our zip lines for backyards kids is made of SUS304 stainless steel which is durable and sturdy.

Easy to Assemble - Edostory zipline kits for backyard are partly assembled. All you need to do is find two sturdy trees, wrap them around, and let your kids straddle the seat, grab the handles, and go. Then you can have endless hours of backyard fun with your little ones.

BECOME A NINJA WARRIOR - This home zip line kit will bring excitement to you and feel like you are a proud ninja warrior, build your confidence, coordination and strength as you use this zip line trolley

ENDLESS FUN – Hone your physical skills, the zipline for kids outdoor toys includes a 65 Ft slack line, a pulley, and a swing with adjustable length ropes, the perfect Christmas gift for kids!

EASY TO INSTALL IN MINUTES – This zip line for outdoor play is easy to setup, find 2 strong trees 10-55 feet apart and attach the slackline. Add the pulley, the swing and let the adventure begin!

【Safety First】Safe strap + Adjustable Belt + Seat + Reliable Braking System for Maximum Security; Our zipline kit with belt has much more safety than the zipline for backyard with seat;You will never need to worried about falling when having fun!This kids zipline kit can turn your yard into a children's playground, helping them get out of their phones and enter the nature!In the experience process, stimulate the children's athletic ability and spend perfect parent-child time

【SUS304 Stainless Steel Steel Cable and Zipline Trolley】Our 120FT zipline is made of ultra-strong stainless steel cable,With durability and weather resistance;Adult zipline can easily support 450 pounds! Our product is specially designed for children-the non-slip rubber grip helps the rider hold the zipline firmly during the playing!The zip-line pulley is made of double stainless steel, with super-slip, sealed ball bearings, long wear-resistant alloy pulleys, steel side plates and soft grips.

【6.5FT SUS304 Stainless Steel Spring Brake System】 Unlike other ordinary springs on the market, our springs are made of heat-treated stainless steel spring steel, which is not easy to rust. Our rubber plug has a built-in high-quality iron tube, which can prevent the cable from rubbing the plug for a long time, which will cause the plug to break, so the zip line kit will not suddenly stop! Spring brakes can effectively ensure a safe distance between your child and the trees to ensure security！

【Safe and Durable】 Our zip line kit are equipped with 330ib stainless steel spring brake as a braking system, which have been strictly tested and this zip line meets the international quality standards (rohs & ce) .We have carefully constructed a product that guarantees complete safety for kids.

【Perfect Holiday Gift Idea】 This backyard zipline can be played by both adults and children. You can spend endless hours of backyard fun with your children and enjoy unforgettable moments .Our zipline also engages kids in active play and helps them develop strength, athleticism, and balance.you will have an amazing backyard playground that will make you the coolest parent!

【Adjustable Seat】 This backyard zipline kits can easily accommodate kids of different heights with its adjustable seat, with non-slippery and comfortable grip, which can always accompany the growth of children.

ZIP LINES FOR KIDS AND ADULTS OUTDOOR ---- Our 120FT high-altitude zipline kit is made of 1/4 inch ultra-strong, galvanized stainless steel cable. With durability and weather resistance, cable sling comes with zipline tree protect tube to avoid any hurting to your trees. It can easily support 330 pounds and is not only suitable for children, but also for adults.

ALL IN ONE SET ---- Zipline kits for backyard includes everything you need to get started without needing to buy any extra parts.120FT Ultra Strong Stainless Steel Cable, UFO-shaped Trolley,4*LED Light,Swing Seat,5.9FT Spring Brake, Tree Protection Tube,9ft Cable Sling ,Turnbuckle,Safety cable are all included in the package,The zip line kit comes with a demonstration video of the installation steps and will take you a few minutes to set up everything.

SAFETY COMES FIRST ---- ZEROMX Profession zip lines is designed with your children’s safety top of mind , 5.9 Foot high-strength stainless steel spring brake as a braking system, can effectively ensure a safe distance between your child and the trees. The upgraded non-slip rubber handle is good for children to grip steadily while playing. We choosing the premium material with superb craftsmanship and repeated rigorous testing, just in order to provide the quality and safe products to your kids.

Quick Set Up & Take Down:The safety ratchet system and 40ft slackline can be quickly and safely set up almost anywhere, coming with 2 pieces 3.3ft tree protectors, well protect trees.All you need is two trees, pillars, beams or bars which are 20-30ft apart and strong enough to bear the weight of the kit plus whoever is using it.

7 Hanging Obstacles,Customize Your Own Course:This obstacle course kit includes 2 gymnastic rings, 3 monkey fists,2 monkey bar holds. Each obstacle can be placed on any of the 15 pockets using the durable steel carabiners. This ninja warrior equipment can also be used as a traditional slackline.

Powerful Load: We believe in safety first! That means strong, heavy-duty materials and several tiers of quality control throughout the manufacturing process. Our equipment is made for ages 5+ with a max recommended weight of300lbs.A convenient carry case lets you take it wherever you go, from the park to a birthday party to a camping trip.

🚀Super Funny🚀Rollspace zipline kit with Ratchet Straps specially designed as a backyard playing set for ages 8+ kids and adults.The zipline kit will make your yard into a playground for your kids, helping them get out of the screen and into nature. You all will experience the smile of speed and spend the perfect parent-child time.

🚀More Safety🚀Rollspace zipline kit is made of 1/5inch Ultra-Strong Compound Galvanized Steels Cable, can easily withstand 250lbs, and has a better Weatherability and Durability; zipline spring brake to help user quickly slow down and maintain a safe distance from the tree; The backyard zipline kit also equipped with safety belt to further upgrade the safety factor.

🚀Quick Set Up🚀With Ratchet Straps Tensioning Kits for Quick Set Up.Provide detailed installation drawings, which will only take you ten minutes to install. Rollspace zipline kits come with a tensioning tool. After fixing both ends, you can tighten the main cable by yourself in minutes, no longer need to spend a lot of effort. All needed tools are included in the package, no additional tools required.

【Start Your Adventure】Zipline kit is especially designed for kids over 3 years old, learn to train like a real warrior. Provide outdoor fun,and strengthen children's adventurous spirit,confidence and courage. Zeromx Pulley Toys is a perfect Gift for kids.

【Easy and Quick Setup】Zeromx zipline kit comes with clear user manual. Simple operation,it only takes you 5 minutes to install! You only need to find two trees that are within 60 feet of each other to build a flying playground for your kids in a park, campground, or your yard!

【Upgraded Pulley】Made of durable stainless steel with a galvanized steel beam,the slackline pulley is precision machined to be waterproof,rustproof and UV-resistant. Wider sealed ball bearings prevent abrasion of slackline,giving you SMOOTH,SMOOTH and SMOOTH experience!