Best Hex Hole Enlarging Drill Bits in 2026

☑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.

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.

【Size】Diameter: 2" (50mm), Threads: 5/8"-11, Grit: #80, Degree: 60, Total length: 55mm, Working Depth:46mm, Hex Shank Adapter Dia: 3/8" (10mm)

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

【Fit for】The Diamond Chamfer Bit is with 5/8"-11 Thread for most Angle Grinders, and package also includes a 3/8” Hex Shank Adapter for most electric or hand drills

【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

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.

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

✓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.

【FUNCTION AND USED FOR】 This diamond finger bits are designed to enlarge, shape, trim and round bevel EXISTING HOLES in porcelain tile, marble, ceramic, granite, etc. And also suitable to easily shape side indentation required to pipes or electric wires.

【YOUR CHOICE】 You can use our milling finger bit to expand existing holes to different sizes or shapes, no need to purchase several core drill bits. Great for granite, porcelain,ceramic or marble countertops, bathroom tiles.

【PREMIUM MATERIAL】High hardness and heavily coated diamond with vacuum brazed technology ensure more effective working performance and precise hole finish. Durable metal and premium diamond provide longer working life.

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.

✓Longer Working Life & Save Money Tool - This diamond countersink drill 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(0-3/8"), no need to purchase several different core bits.

✓Easy to Use & Save Time - The 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.

✓Reduce risk of material cracking - The diamond beveling chamfer bits is a 60 degree diamond cones beveling bit, degree 53 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 it works.

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!

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