Best Hex Hole Enlarging Drill Bits in 2026

Extreme Durability: Cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.

Different Sizes of Holes Can Be Drilled: Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes. You are capable to drill holes in different sizes which can meet your normal needs.

Smooth Drilling: Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits).

☑Diamond Finger Bit Dimension: Diameter 1-3/8”(35mm), 50mm workable length, Connection 5/8"-11 thread,Total Length: 70mm, Grit #50/60.

☑High Performance：Vacuum brazed technology provide much longer working life (Generally 3-5 times), more Heavy Duty and wear Resistant than electroplated ones,provide very high efficiency,cuts faster,durable and sturdy.

☑Widely Applications: Recommended for enlarging, shaping and/or round bevel existing holes in porcelain tile, ceramics, bathroom tile,marble and countertop with ease,necessary to accomodate pipes or electric wire lines.

【Size】Diameter: 2" (50mm), Threads: 5/8"-11, Grit: #80, Degree: 60, Total length: 55mm, Working Depth:46mm

【Function】It is a versatile milling bits designed to enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, Granite and Marble. Also easily create round shape indentation to accommodate pipes or electric wire lines

【Used for】Very useful to improve the edge finishing of exposed holes.Diamond bit for a smooth, high-end finish.Bevel Ease chamfers and stress relieves rough holes in ceramic and porcelain tiles

It is a versatile milling bit designed to enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, Granite and Marble.and it's also suitable to easily create round side indentation necessary to accomodate pipes or electric wire lines.

It can be used with any 5/8"-11 Thread standard grinder.

This is a save money tool because with just one standard core bit and this finger bit you are able to create many different hole sizes, without needing to buy several different core bits.

Diameter: 10mm; Workable length: 50mm; Thread: 5/8"-11; Total length: 75mm; Grit #50/60

Save your money: just one standard core bit plus one our finger bit, you can create many different hole sizes, without buying several different core bits.

Attention: not designed to drill holes but to enlarge and milling existing holes.

【Restart Your Garden Fun】 Forget Your Soil Shovel, Don't Be More Tired. Auger Drill Bit For Planting Saved Many Hours Of Digging. Quickly Loosen Up Packed Soil, Improving Double The Work Efficiency At Least, Good Gift For Your Dad Mom Husband Or Wife.

【Great Digging Holes Partner】 Auger Drill Bit Really Do A Good Job, Churning Up The Soil In Garden, Vegetable Field, Flower Pot, Sand. Even Making The Ice Holes. Suits For Planting Bulbs, Flower, Potted Plants, Vegetables. Also Compost, Transplant, Digging Holes For Stakes And Etc. Great For Helping Remove Last Season’s Plants, Digging Holes For New Plants Or Fertilizer.

【Durable Materials Design】 Garden Auger Bit Is Made Of Heavy Duty Steel With Black Painted Finished, High Hardness, Good Wear Resistance, Suitable For Soft Soil, Not For Use With Hard Soil or Solid Rock, If It Catches A Rock, Please Moving Around In Hole Like Stirring. The Drill Bit Works With Any 3/8 inches Non-Slip Drill Or Larger Chucked Drill, 18v Or Greater Drill Recommended.

【FUNCTION AND USED FOR】 This diamond countersink drill bits is designed to enlarge, shape and trim the EXISTING HOLES in porcelain tile, marble, ceramic, granite, etc.

【PREMIUM MATERIAL】 High hardness and strength. This diamond granite drill bit is made of premium diamond and durable metal. It uses these high quality raw materials to ensure more effective cleaning and trimming.

【YOUR CHOICE】 The diamond beveling chamfer bits is a great choice for you that you can use it to make holes of many different sizes, and no need to purchase several bits.

Must Have Tile Tool: This Diamond Chamfer Bit designed to Bevel, Enlarge Holes, Trim, Shape, Smoot Rough Cutting Surfaces in Porcelain, Hard Ceramic Tiles, Granite, Quartz and Marble Countertop and more

Multi-Functional: The Diamond Cone Countersink Drill Bit equals a bunch of different sizes core bits; with one core bit to start a hole, this bit can enlarge the hole into any size between 0 to 2inch (0~50mm)

Fit Angle Grinders and Electric Drills: The Diamond Chamfer Bit built with 5/8 -11 Thread for most Angle Grinders, and package also includes a 3/8” Hex Shank Adapter for most electric drills

Versatile Finger Bits designed to Enlarge,Shape and/or Round Bevel existing holes,and also can create and shape half-moon side indentations necessary to accomodate pipes or electric wire lines

Save your money, only 1pc Core Bit and this diamond milling bit,you can create many holes of different sizes without buying any other diamond hole saws in different sizes

Dry and wet use in Porcelain,Ceramic,Granite, Natural Stone,Stoneware,Marble,Marble Tile,Single-fired tiles,Double fired Glazed tile,etc

Unique Ball Nose End Diamond Bit: Diamond Finger Milling Bit is perfect for jobs to enlarge, and shape circular holes, drain holes in tiling projects in bathroom and kitchen to fit tiles perfectly around pipes, faucets, shower valves; Unique Ball nose end design can do more things than flat ones, such as tapping

Designed for Hard Materials: This Diamond Hole enlarger bit works perfectly for enlarging or trimming holes in porcelain sink, limestone vanity sink top, ceramic bathroom sink, thick granite countertop, marble, stone,even quartz countertop which is harder

A Tool to Save you Time and Money: when you upgrade or replace the bathrooms faucets, you may find the new faucets are a bit larger than the old ones, with this Diamond Finger Milling Bit to enlarge the hole in a minute, you can save a lot of trouble and time and money

Diamond Beveling Chamfer Bits: diamond cone grinding bit measures approx. 1-7/8 inch (48 mm) in diameter, the thread is 5/8 inch-11, the grit is #80 and the degree is 60, suitable for 5/8 inch-11 thread angle grinder, equipped with a 5/8-11 inch thread adapter for drill

Diamond Milling Bits: the diamond milling bit measures approx. 3/5 inch (15 mm), the machinable length is approx. 40 mm, 5/8-11 thread, grain size 45/50, and overall length is about 65 mm

Create Holes of Different Sizes: with this standard diamond coring bit and diamond milling bit, you can easily create many holes of different sizes (0-2 inch) without buying multiple different coring bits, saving time and effort

【Premium Material】 This granite bit is made of high quality diamond and durable metal. High in hardness and strength, it uses these high-quality raw materials to ensure more efficient cleaning and trimming.

【Product Size】 Dia: 3-1/4" (82mm), Threads: 5/8"-11, Grit: #80, Degree: 60.Spare attachment: Come with a 5/8-11 threads connection rod.

【Function and Used For】This diamond countersink drill bits is designed to enlarge, shape and trim the EXISTING HOLES in porcelain tile, marble, ceramic, granite, etc. And also suitable to easily shape side indentation required to pipes or electric wires.

【APPLICATION】 2 inch diameter Diamond beveling chamfer bits for EXISTING HOLE size from 0-2 inch. NOT A CORE BIT FOR DRILLING HOLES, but a countersink bit for enlarging, shaping, trimming, cleaning holes.

【FUNCTION】 The diamond countersink drill bits is designed to enlarge, trim, shape the EXISTING HOLES in tile, granite, ceramic and marble. Also suitable to easily shape side indentation required to pipes or electric wires.

【COST-SAVING TOOLS】 With just our diamond beveling chamfer bits and one standard core bit, you can make many different hole sizes, no need to buy several different bits, save your money.

Twist Drill Angle Gauge Grinding Drill Bits Diameter Center Gauge Sharping Tools

Drill bit angle gauge for measuring drill bit 118 degree

Made of stainless steel, not easy to rust and bend

✓Longer Working Life & Save Money Countersink Drill Bit - This diamond beveling chamfer bit is made of high quality diamond and durable metal. High in hardness and strength, even diamond particle will bring a smooth beautiful hole finish. The high quality of the diamonds provides longer working life. You can use it to make holes of many different sizes(0-2"), no need to purchase several different core bits.

✓Easy to Use & Save Time Countersink Drill Bit - The KEMIVTON diamond beveling chamfer bit designed to enlarge , shape and/or round bevel existing holes in ceramic, glass, granite stone tile marble etc. Perfect combination of the cutter head and the base, the vacuum brazed diamond countersink drill bit is very useful to improve the edge finishing of exposed holes.

✓Countersink Drill Bit - Reduce risk of material cracking - KEMIVTON diamond beveling chamfer bits is a 60 degree diamond cones beveling bit, degree 60 inclined surface relieves pressure on chamfers, helping to reduce risk of cracking with standard and large format tiles subjected to tension to ensure more effective cleaning and trimming. Because it deduces heat buildup, so the faster the diamond drill bit spun, the better diamond milling bits works.

Diameter 25mm(1"), 50mm workable length, Connection 5/8"-11 thread,Total Length: 65mm,Grit #45/50

It is not designed to make holes but to shape and enlarge existing holes in ceramic tile porcelain marble granite.

Just one standard core bit plus one our finger bit, you can create many different hole sizes, without buying several different core bits.

【Dimensions】-Diameter 20mm (4/5 Inch),Chamfer Angle:Top Angle 56 degree,Total length 40mm,Workable length 20mm,Hex Shank, for Electric Drill,if fix it on Hammer Drill,please turn off Hammer Mode;

【Apply to】-Not for drilling holes,but designed to Wet or Dry Enlarge, Shape, Polish,Clean,Trim,Finish,Round or Bevel Existing Rough Holes of Marble Ceramic Porcelain Tiles Granite Stone.

【Vacuum Brazed Diamond Technology】-Stronger and more Uniform layer of diamonds for Enhanced performance and longer tool life.

M2 high-speed steel drills produce perfectly round, burr-free holes. Precision ground with a bright finish, Premium Swift Bore (Registered Trademark)

For drilling metal, wood and plastic in up to 1/8-inch thick material. Sizes laser-etched on bit for easy hole size identification

1/2-inch Tri-lobe shank won't slip in the drill chuck and the cone shape of the bit adds strength preventing bit flexing while drilling

[Size Diamond Cone Tile Bit] --1pc 1-3/8 Inch (35mm)calidad tools tile cone, 35mm workable Depth, 5/8-11 Thread, Grit #80, total Length 45mm,Top Angle 53 degree

[Wide Applications] --diamond cone tile bit is designed to trim,enlarge,shape,round bevel existing holes in tile,Porcelain, Granite and Marble.cone drill bit is very useful to improve the edge finishing of exposed holes,reduce the risk of cracking with standard and large format tiles subjected to tension (ex tightened plumbing, led lights etc),Bevel Ease chamfers and stress relieves rough holes in glass,ceramic and porcelain tiles.

[Save your money] --Using our tile cutting tools to expand existing holes to different sizes or shapes(0-50mm), no need to buy several core drill bits,which will save your money greatly!

MULTI-PURPOSE: This diamond countersink drill bits is designed for Bevelling，Enlarging, Grinding and Polishing the exsit holes or shaping edge f materials.

HIGH-GRADE DIAMOND:#80 diamond grain make the edge of the hole smooth and clean, and can achieve excellent surface effect.

APPLICATION: The chamfer effectively eliminate the rough holes of ceramics, tiles porcelain marble and other materials.

Unique combination of 135 Degree self-centering split point stepped to 118 Degree hole enlarging body for fast, easy starts and smooth drilling

Hole in flute for easy wire pulling through walls, ceilings and floors

3-flatted shank prevents slipping in drill chuck and includes hole for wire pulling

Shank: Hex Shank,for Electric Drill,if fix it on Hammer Drill,please turn off Hammer Mode; Diameter:50mm(2 Inch),Chamfer Angle:Top Angle 60 degree,Total length:73.5mm,Workable length:43.5mm

Application:This is a versatile diamond milling finger bit, designed to Wet or Dry Enlarge, Shape, Polish,Clean,Trim,Finish,Round or Bevel Existing Rough Holes of Marble Ceramic Porcelain Tiles Granite Stone

Features:You can easily produce 0-50mm hole size with just One Standard Diamond Core Bit Plus one Diamond Chamfer Cone Tile Bit, cost-effective

Unique combination of 135 Degree self-centering split point stepped to 118 Degree hole enlarging body for fast, easy starts and smooth drilling

Hole in flute for easy wire pulling through walls, ceilings and floors

3-flatted shank prevents slipping in drill chuck and includes hole for wire pulling

Our diamond beveling chamfer bit set includes 2 different shaped of diamond router bits with a threaded adapter. They can be used with the adapter to polish the hole.

With our diamond cone grinder bit and diamond milling drill bit, you can easily create holes of different sizes (0-2 inches) without having to purchase multiple core drills, saving you time and effort.

Our ceramic tile chamfering tool bits are made of high-quality diamond and sturdy metal materials, ensuring safety, reliability, high hardness, and strength for more effective cleaning and trimming, resulting in smooth and beautiful hole finishes.

8pcs/set. 19/25/35/51/76mm diamond drill bits: Total length 75mm, diamond height 15mm; workable length: 50mm. Grit: #35/40; 2"(50mm)Diamond chamfer bit: workable length 46mm; Chamfer angle: top angle 60 degree;Grit:#80/#100.4/5"(20mm) diamond finger bit: total length 65mm, workable length 35mm. Grit #50/60.

5/8"-11 female thread, used on 5/8” thread angle grinder. Recommended RPM: 6000; Maximum RPM:11000. Please don’t use the hammer mode if you use the drill bits on electric drill through the SDS adapter.

Multi-use: Drill bits for drilling holes; Chamfer bit for enlarging or shaping the holes and edging grinding of applicable material.

【Package Includes】4 PCS in total:3pcs Tile Hole Saw 1/4",5/16",3/8"(6/8/10mm)+1pc Hex shank Adapter to 5/8-11" thread

【Vacuum Brazed Diamond Technology】More Heavy Duty and Wear Resistant than electroplated diamond bit,provide very high efficiency,cuts faster,durable and sturdy.

【Wide Compatibility】Diamond drill bit set for Wet/Dry Drilling/Shaping/Enlaging/Cutting on various materials,like Porcelain Ceramic Tile Granite Marble Stone.

Package Content: what you will get are 2 pieces of diamond beveling chamfer bits, about 2 inch/ 50 mm in diameter, and threads are approx. 5/8-11 inch, the proper size is simple for you to apply

Ideal for Enlarging Holes: diamond drill bits for ceramic can be applied to enlarge holes that are approx. 0.08-2 Inches/ 2-50 mm, please check the size you need before purchasing them

Warm Using Tips: please note that the cone drill bit cannot be applied to drill holes; It is suitable for enlarging, shaping and polishing holes on tiles, marbles, glass, granite, and ceramics