Best Plastic Countersink Drill Bits in 2026

HSS Titanium Coating - Classic HSS construction with titanium coating for capability and durability. The cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean.

Flutes Form - 2 flutes form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process.

Quick Change - 1/4 inch hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck. We also offer a quick-change adapter to better quick change.

GET THE JOB DONE - Countersink circular openings in metal, plastic or wood with our hand reamer. It has a sharp, 90-degree angled blade, letting you work with efficiency and precision.

MADE TO LAST FOR LONGER - Have a reliable tool for years to come by choosing our hand reamer. Its extension telescopic holder is crafted from hardened steel to withstand regular use.

WORK IN COMFORT - To ensure you’re able to fix and build fixtures with ease, we designed the countersink tool with an ergonomic handle. This is to allow for a secure grip no matter the angle.

【 Exquisite workmanship】Durable taps are made of high speed steel, which can ensure sharp, fast execution and retain strength and efficiency. The surface is treated with a titanium alloy, which greatly improves the cutting performance of the drill, is more wear-resistant and prolongs the service life.

【Ergonomic design】The product portfolio includes SAE and metric sizes, so it has high versatility. Each tap drill is engraved with a label, which is convenient for you to choose the size that suits you. The convenient ¼-inch (6.35mm) hex shank has a tapered end to prevent excessive knocks. Back taper exceeds the tap to prevent over-drilling and damage to the thread.

【High efficiency 】 They are taps with drilling function, three-in-one operation, which can drill, tap, deburr and counter holes on copper, brass, aluminum, metal sheet and plastic at the same time, so as to quickly , Complete work completely, greatly save processing steps and time costs, and improve work efficiency.

【IDEAL COMBO SET】 7 countersink drill bits size of Ø7/64”(3mm), 5/32”(4mm), 13/64”(5mm), 1/4”(6mm), 9/32”(7mm), 5/16”(8mm) combine with Ø19/32”(15mm) countersink pedestal, 13/32”(10mm) combine with Ø45/64” countersink pedestal. 3 countersink bits with most commonly-used sizes of Ø12mm(1/2"), 16mm(5/8"), 19mm(3/4") A 1/10”(2.5mm) Free Hex Key Wrench Plus. Come with a portable plastic case for easy convenient select, storage and organization.

【PREMIUM QUALITY】Made with industrial grade high-carbon steel, great hardness provides sharp edges, high strength takes bits with superior cutting capactiy and durability. Ideal for household woodworking and DIY Projects.

【EFFICIENT DESIGN】For 7 countersink drill bits, 3-point tricuspid ensures drill process accurate and fast, no offset, slip and bias during drilling; 2-spiral flute makes chip removing easy and efficient. For 3 countersink bits, 90°on the point & 1/4" hex shank for quick change make the countersink process convenient. All drill bits get 5-edged chatter-free chamfer cutter pedestal design makes countersink precise and smooth. All cutting edge are well hardened and honed for sharpness.

【IDEAL COMBO SET】 A set of countersink drill bits with 7 drill size, Ø7/64”(3mm), 5/32”(4mm), 13/64”(5mm), 1/4”(6mm), 9/32”(7mm), 5/16”(8mm) combine with Ø19/32”(15mm) countersink pedestal, 13/32”(10mm) combine with Ø45/64"(18mm)” countersink pedestal. A 1/10”(2.5mm) Free Hex Key Wrench Plus. Come with a portable plastic case for easy convenient select, storage and organization.

【PREMIUM QUALITY】Made with industrial grade high-carbon steel, great hardness provides sharp edges, high strength takes bits with superior cutting capactiy and durability. Ideal for household woodworking and DIY Projects

【EFFICIENT DESIGN】3-point tricuspid ensures drill process accurate and fast, no offset, slip and bias during drilling; 2-spiral flute makes chip removing easy and efficient; 5-edged chatter-free chamfer cutter pedestal design makes countersink precise and smooth. All cutting edge are well hardened and honed for sharpness.

CAPABILITY & DURABILITY: Classic Carbon Steel Material. High hardness, offer superior cutting power and durable.

THREE-POINTED DESIGN:Quickly and accurately drill a smooth hole.Better in CENTERING and NO SKID . Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.

REMOVABLE & ADJUSTABLE: Easy to use the combination of Hex Key to adjust or disassemble the countersink drill bit and the five-flutes chamfering.

Material:HSS（High Speed Steel）4241, Titanium Coated

Application:Ideal for cutting through metal,wood,plastic and thin iron plate (hardness <25 degrees)

Chamfer range:2-5mm, 5-10mm, 10-15mm, 15-20mm, Shank diameter: 6mm, 8mm, 10mm, 12mm, Head diameter: 10mm, 14mm, 21mm, 28mm

MULTI-MATERIAL DRILL BITS - Easily Drills through Ceramic Tile, Glass, Cinderblock, Hard Plastic, Cement, Concrete, Mirrors, Windows, Travertine, Brick, Wood, and So Much More!

DURABLE INDUSTRIAL GRADE CARBIDE TIPS - Carbide Tipped Drill Bits Are Built For Longevity and Will Stay Sharper Much Longer Than You're Typical Steel Drill Bit

CONVENIENT STORAGE CASE - Keeps Your Masonry Drill Bits Safe & Organized in a Rust-Free Hard Plastic Container

[What You Will Have] Set of 6 metric tap drill bit set M3x0.5 M4x0.7 M5x0.8 M6x1 M8x1.25 M10x1.5 Short size is not easy to shake and can drill accurately

[Easy Use]Fast replacement composite cone uses drill edged principle Drilling and tapping in one, one-step processing, which can drill, tap, deburr and counter holes on wood, copper, brass, aluminum, sheet metal and plastic greatly save processing steps and time costs, improve working efficiency

[Material] HSS4341 (high-speed steel) + titanium coating. Each tap drill is engraved with a size making, which is convenient for you to choose the size that suits you

[A variety of drill bits]: 5 different drills, which can meet all your daily needs

[Ultra-high strength]: easily perforate wood, metal, plastic and other materials

[Multiple sizes]: Each drill has multiple sizes to meet your different needs for sizes

Super Durable Hard Steel - Made of extremely hard stainless steel with high strength and hardness for durability, anti-rust and anti-corrosion. It can accompany you for a long time.

Safe and Efficient - The high strength and hardness deburring external chamfer tool easily shave down the outer edges of a bolt, pipe or rod, remove the burr. Quickly repairs damaged bolts and tightens the nuts in place without hurting your hand, no sparks, and no burns; Simplifies the repair process.

Simple Operation - Attaching the deburring external chamfer tool to the end of your power drill, Use the lowest speed on the drill bit, and then slightly applying pressure to remove the burr. The tool simplifies the repair process, can reduce repair time and eliminates the need to replace expensive or hard-to-find hardware. Great helper for industry and household.

COUNTERSINK DRILL BIT SET - Also Countersink For Woodworking - Included 5 Pieces all same size #6 Cutters (for up to 3/8" or 10mm screws head), 2 extra Tapered High Speed Steel M2 Drill Bit (6542 grade), 1 Stop Collar, 1 Hex Wrench and 1 Safe Container to keep your set safe and always handy

ADJUSTABLE COUNTERSINK - Also Countersink Bits For Wood - The Adjustable Stop Collar allows you to adjust the Counterbores depth and Adjustable Cutters can be adjusted for many screws sizes.

QUICK CHANGE SHANK - The Quick Change 1/4" Shank is Universal size, Compatible with all 1/4" Quick Change Chucks, Juego De Brocas Avellanadoras Para Madera, Avellanadores Para Madera, Juego De Brocas Para Avellanar, Broca De Avellanado.

[Specifications and packaging]: Countersink drill bit set includes 5 pcs countersink bits and 1 pc aluminum carrying case.Include size:1/4", 3/8", 1/2", 5/8", and 3/4".

[Function]: Counter sink drill bits sink holes into most machinable metals, plywood, softwood, hardwood, fiberglass plastic, mild steel.

[Material]: Metal countersink bits are made from industrial grade high-speed steel for increased durability.Each sink has a black oxide coating to resist corrosion.

【 Durability&High Hardness】Made of classic carbon steel material, high hardness, offer superior cutting power and durable.Widely used suitable for DIY, home and general building or engineering using, etc.

【Three Pointed Design】Quickly and accurately drill a smooth hole. Better in centering and no skid.Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.It can effectively prevent the accumulation of debris retention, improve the drilling efficiency.

【Different Sizes】Our Countersink drill bit sets include 6 kinds of sizes:2.8 x 8mm（7/64''×5/16"）, 2.8 x 10mm（7/64"×3/8"）, 3 x 8mm（7/16"×5/16"), 3 x 10mm(7/16"×3/8”）, 3.2 x 8mm（1/8"×5/16”）, 3.2 x 10mm（1/8"×3/8"), very suitable for using to multi size wood hole drilling. One tool for multi uses, improve your working efficiency.

PRECISION MACHINED TIPS: These countersink drill bits come with 1/4" tri-flat shanks with a precision-ground 82-degree tip for sinking holes into wood, machinable metals, mild steel, fiberglass plastic, and more and fit common handheld power drills.

M2 HSS MATERIAL: Each metal countersink bit is made of high quality M2 HSS material for extended drill bit life and efficiently drills countersinks to help create strong joints between screw and material.

FIVE-FLUTE DESIGN: Each of the 5 counter sink bits utilizes a five-flute design that reduces vibration for smoother drilling as found in woodworking with a 1/4-inch shank that allows easy gripping.

⭐【Material】Countersink drill bit is made of High-speed steel, offering a combination of hardness and toughness for wear resistance.

⭐ 【Round Shank】Countersink drill bit is with round shanks which are available for a wide variety of toolholding systems.

⭐【60 Degree Holes】Used for drilling holes with chamfered edges 60 degree holes, 32mm/1.26" drill diameter.

Fitment Bolt Tube Size：8mm -28mm. Effective on Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum, Fiberglass, Wood, Plastic, no matter it is with or without screw thread.

Exotic Super Hard Steel：made of high speed steel with three shaving teeth,has the feature of high strength and hardness for durability.

The operation is simple, using the lowest speed on the drill bit, and then slightly applying pressure to remove the burr.

Excellent Performance: Countersink drill bit set for wood with tapered drill bit M2 HSS, 4 Flute countersink cutter for superior cutting power & durable

Product Feature: Standard 1/4 inch hex shank is quick change compatible and has an adjustable counter sleeve depth with Allen wrench, for flush screw heads or deeper to cover with matching plugs

Meet Your Demands: #4(7/64”), #6(9/64"), #8(11/64"), #10(3/16"), #12(7/32"), 5 pieces different sizes of countersink drill bits, satisfy you all demand. The most often used sizes for cabinet, furniture makers and other wood working

All-in-one Convenience: The AVID POWER 100-piece drill bit to work on a wide range of projects, this drill bit set is made for wood, metal, masonry, and plastic drilling as well as multiple screw driving and fastening applications.

Long Life and Added Durability: High-speed steel titanium drill bits run cooler, drill smoother, and last up to three times longer than your standard drill bit set. Size and dimensions are marked on the drilling surface for easy identification.

Widely Use： A wide assortment of bits to face numerous jobs. 14 HSS drill bits, 9 wood drill bits, 9 masonry drill bits, and 56 screwdriver bits in a wide variety of sizes among other tool accessories to create a complete, all-inclusive drill bit kit. great for household and furniture repair.

COMPLETE SET - Comprehensive, high quality 246pc drill bit set – made for masonry, wood, metal and plastic drilling as well as multiple screwdriving and fastening applications.

VARIETY - Full set includes 87 X HSS twist drill bits, 22 X wood drill bits, 21 X masonry/cement drill bits, 4 X drill stops, 66 X 1” bits, 30 X 2” bits, 6 X nut drivers, 2 X hex keys, 1 X counter sink, 4 X hole saws, 1 X arbor adaptor, 1 X nail punch and 1 X bit holder.

UNIVERSAL - Compatible with all VonHaus drills and many other popular models. Ideal for DIY projects and household maintenance and repair – each bit is colour-coded for easy identification.

CUT DIFFERENT MATERIALS: Use the ABN Screw Countersink Kit 5-Piece SAE Drill Bit Set, 82-Degree, 1/4” Inch Shank, 5 Flute to quickly and easily cut soft metal, wood, rubber, plastic, and other machinable materials; Drill a hole and then use one of the included bits to countersink a spot of the screw head

SIZES: The 5 bits come in SAE standard sizes 1/4-inch, 3/8-inch, 1/2-inch, 5/8-inch, 3/4-inch

COMPATIBLE: 1/4-inch round shank fits standard handheld and stationary power drills; 5 flutes reduce vibration for smoother drilling; Precision-ground 82-degree point angle for heavy-duty use and clean cuts every time; 1/4-inch tri-flat shank offers an easy grip

Countersink drill bit case size: 3.7 x 1.0 x 1.0 inch, can hold drill bits from 2 ¾” up to 4 ¾”, just right to fit in your tool belt, store them conveniently on your toolbox, and easy to hang on your pegboard. This container will protect and keep your drill bits safe and organized

Material: made of durable plastic, waterproof, corrosion resistance, will not rust or dent. Designed to keep your countersink bits safe and improve your storage space

Quantity: 6-piece drill bit tool storage containers, lightweight, dustproof, and have no sharp corners. Containers can be labeled permanently by writing directly on the plastic with a thick permanent marker, or blue painter’s tape can be used to write the content of each case on, as the tape can be removed cleanly without leaving residue

Precision-ground 82-degree point for countersinking into most Machin able metals, wood and plastic

Hardened and tempered M2 High-Speed Steel, Premium Swift Bore (Registered Trademark)

Designed with five flutes for chatter free smooth drilling, chamfering and deburring

【Step Drills and Cone Drill】3 piece 5/9/14 step drills (4-12/20/32mm) and 1 piece cone drill (8-20mm). Laser marking of step size provide convenient and accurate drilling

【Countersink Drill Bits】6 piece countersink drill bits: 6.3, 8.3, 10.4, 12.4, 16.5, 20.5mm - 90° point, three cutting edges, ideal for deep countersinking

【High Quality】All drills are HSS Titanium coated, come with 1/4" (6.35mm) hex shank, and are precision ground, heat treatment, and hardened for consistently accurate drilling or enlarging holes into sheet & non-ferrous metals, wood and plastics

Update plastic box packaging Imperial units 6PCS：1/8"(3.175mm)、5/32"（3.97mm）、3/16"（4.76mm）、1/4"（6.35mm）、5/16"（7.94mm）、3/8"（9.53mm）

Suitable for Low Hardness Materials Such as Wood, Aluminium Plate, Plastic, or Sheet Iron (thickness of less than 3mm).

Back tapered beyond tap to prevent thread damage from over-drilling

FTG 6810V2 features Improved Connection Without a Pin through drill bit and hex shank. Drill set designed as reliable woodworking tools. Countersink drill bits for wood made to drill, countersink, and counter-bore in 1 step sink counter set. Countersink drill bit set for wood with tapered drill bit, 4 Flute cutter, 3 size drill bits sets with countersink #6(9/64") #8(11/64") #10(3/16") 1 Depth Stop Collar 3/8", 1 Allen Wrench. Counter-bore, and wood plugs all same size 3/8"

FTG Maximum Torque Version 2.0 FTG 6810V2. Adjustable countersink drill bit with quality-built depth adjustable counter bore attaches to flat on shank with 2 hex screws for controlled pilot hole depth. Wood drill bit set with chamfer angle 82-degree, smooth countersinking in hard and soft wood, taper holes for screws. Best adjustable wood countersink drill bits set ideal for wood-working. Counter sink bits designed to work as wood drill bits

THIRD-PARTY TESTED by US Accredited Lab - HSS M2 Grade 6542 countersink drill bit for wood with tapered drill bits. Wood countersink bit with wider flute shape for increased chip flow. Drill bit set with logo brand name laser printed on each countersink bit quick change 1/4" hex shank. Countersink drill bits with countersinks for wood to drill tapered hole drill bit every time. Tapered drill bit for wood countersink set, drill bits with Improved Connection Without Pin

[Easy Use]Fast replacement composite cone uses drill edged principle Drilling and tapping in one, one-step processing, which can drill, tap, deburr and counter holes on wood, copper, brass, aluminum, sheet metal and plastic greatly save processing steps and time costs, improve working efficiency

[Material] HSS4341 (high-speed steel) + titanium coating. High speed steel is designed to ensure sharp, fast execution and withholds strength and efficiency. Each tap drill is engraved with a size making, which is convenient for you to choose the size that suits you

[Quick Change] 1/4 inch Hex Shank fits into all power tools more easily and securely, especially for locking into quick change chuck. Convenient ¼” hex shank features a tapered end to prevent over-tapping and includes a quick-change adapter for easy size change

✅【Automatic Center Punch】The center punch delivers an automatic,high-impact,spring-loaded strike through adjusting the cap; Carbide center punches are 10 times stronger than regular punchesprotective aluminum case makes the drills not easy to dull.

✅【Hss 50 Sizes】 ncludes five standard step drill bits with center punch,Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes,to meet your normal needs.

✅【Durable titanium coated drill】Coated by titanium, this step drill set performs well in heat, corrosion and rust resistance,Can reduce friction and run cooler.

Introducing our 6pcs wood metal Counter sink Drill Bit , designed to provide excellent results when drilling through metal and wood. Made with high-speed steel HSS4241, this drill bit is known for its durability, strength, and resistance to wear and tear.

Our Chamfer Drill Bit features a 90-degree angle and 3-flute design, which ensures precise and accurate drilling, delivering a clean and smooth finish every time. The countersink drill bit is designed is ensures that the screw head sits flush with the surface, providing a professional and polished look to your work.

This woodworking and metal working drill bit set is suitable for use on a wide range of materials, Used in hardness 25 ° below the workpiece, such as carbon steel, sheet iron, insulation board including metal and wood, making it a versatile tool for any workshop. 6 pcs different size , One set for all your needs .Whether you're a professional carpenter, mechanic, or DIY enthusiast, our Countersink Drill Bit is an essential addition to your tool collection.

Shape: 7pcs 1/4 inch Shank Titanium Combination Drill and Tap Set, Metric M3*0.5mm (2pcs), M4*0.7mm, M5*0.8mm, M6*1.0mm, M8*1.25mm, M10*1.5mm, It is not easy to shake and can drill accurately.

Multi-purpose: These drill tap bits are must have if you fabricate a lot; you can use the in aluminum, wood, plastic, iron, and so on, They’re sharp, and easy to use. Fit Electric hand drill, impact drill, bench drill and tap machines.

Easy to Use: Each tap drill is engraved with its size convenient for you to choose the suitable size with a glance. A tapered end on hex shank can prevent excessive knocks; Back taper exceeds the tap to prevent over-drilling and damage to the thread.