Long-Life Grinding Bits for Nonmetals
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The diamond abrasive in these bits is extremely hard and lasts longer than tungsten carbide. For longer tool life and improved finish, use a water- or oil-soluble mist or coolant.
Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape | Abrasive Material | O'all Lg. | Grit (Surface Texture) | Each | ||
For Carbide, Ceramics, Glass | |||||||||
1/8" Shank Dia. | |||||||||
| 1 | 0.03" | 0.08" | 100,000 | Cylindrical | Diamond | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 000000 |
| 1 | 0.03" | 0.19" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.04" | 0.08" | 100,000 | Cylindrical | Diamond | 2 1/4" | 220 (Extra Smooth) Silver | 0000000 | 00000 |
| 1 | 0.04" | 0.19" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.05" | 0.08" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.05" | 0.19" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.06" | 0.12" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.06" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.07" | 0.12" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.08" | 0.16" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.08" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.09" | 0.16" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.1" | 0.16" | 100,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.11" | 0.16" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.12" | 0.16" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.13" | 0.2" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.13" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.14" | 0.2" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.16" | 0.2" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.16" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.19" | 0.31" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.03" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.06" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.13" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 1/4" | 100,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.25" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 1/2" | 100,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.31" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.375" | 1/8" | 40,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.375" | 1/4" | 90,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.375" | 3/8" | 90,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 2 | 0.06" | 1/4" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.13" | 1/4" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.25" | 0.31" | 46,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.31" | 0.31" | 46,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 3 | 0.14" | 0.31" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.06" | 0.31" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.08" | 0.31" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.11" | 0.31" | 96,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.156" | 5/8" | 40,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 00000000 | 00000 |
| 5 | 0.16" | 0.23" | 96,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.17" | 0.14" | 96,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.19" | 0.38" | 96,000 | Taper | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.06" | 0.06" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.09" | 0.09" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.13" | 0.13" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.19" | 0.19" | 96,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.25" | 1/4" | 46,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.38" | 0.38" | 46,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 7 | 0.031" | 1/32" | 40,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 00000000 | 00000 |
1/4" Shank Dia. | |||||||||
| 1 | 0.06" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.09" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.13" | 1/4" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.19" | 0.31" | 96,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.2" | 0.24" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.24" | 0.28" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.25" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.26" | 0.28" | 60,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.31" | 0.31" | 46,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.32" | 0.32" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.34" | 0.32" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.38" | 0.31" | 46,500 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.39" | 0.39" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.5" | 1/4" | 70,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.5" | 0.31" | 30,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.5" | 1/2" | 70,000 | Cylindrical | Diamond | 2" | 150 (Smooth) Silver | 00000000 | 00000 |
| 1 | 0.59" | 0.39" | 20,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.73" | 0.39" | 20,000 | Cylindrical | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.38" | 0.31" | 46,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.5" | 0.31" | 30,000 | Barrel | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 6 | 0.5" | 1/2" | 30,000 | Ball | Diamond | 2 1/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 8 | 0.19" | 0.1" | 18,600 | Flat-Top Cone | Diamond | 2" | 120 (Smooth) Silver | 0000000 | 00000 |
| 8 | 0.25" | 0.1" | 18,600 | Flat-Top Cone | Diamond | 2" | 120 (Smooth) Silver | 0000000 | 00000 |
| 8 | 0.5" | 0.2" | 30,000 | Flat-Top Cone | Diamond | 2" | 120 (Smooth) Silver | 0000000 | 00000 |
For Carbide, Ceramics, Glass, Grout | |||||||||
1/8" Shank Dia. | |||||||||
| 4 | 0.094" | 5/16" | 40,000 | Barrel | Diamond | 2 1/2" | 120 (Smooth) Silver | 00000000 | 00000 |
1/4" Shank Dia. | |||||||||
| 9 | 0.094" | 5/16" | 40,000 | Barrel | Diamond | 2 1/2" | 120 (Smooth) Silver | 00000000 | 00000 |
| 9 | 0.188" | 5/16" | 40,000 | Barrel | Diamond | 2 1/2" | 120 (Smooth) Silver | 00000000 | 00000 |
Miniature Long-Life Grinding Bits for Nonmetals
Made with diamond abrasive, these bits are extremely hard and last longer than tungsten carbide. They have a small shank and head for precise and intricate jobs. To extend the life of these bits and improve their finish, use a water- or oil-soluble mist or coolant. They are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
A keyless chuck (sold separately) connects these bits to rotary tools that accept a 1/8" shank diameter.
Caution: As bit shank is exposed beyond 1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.
For technical drawings and 3-D models, click on a part number.
Grinding Bits
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4
5
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Max. Speed, rpm | Shape | Abrasive Material | Shank Lg. | Grit (Surface Texture) | Each | ||
For Carbide, Ceramics, Composites, Fiberglass, Glass, Plastic, Rubber | |||||||||
3/32" Shank Dia. | |||||||||
| 1 | 0.047" | 0.059" | 75,000 | Inverted Cone | Diamond | 1 3/4" | 120 (Smooth) Silver | 0000000 | 000000 |
| 1 | 0.071" | 0.059" | 55,000 | Inverted Cone | Diamond | 1 3/4" | 120 (Smooth) Silver | 0000000 | 00000 |
| 1 | 0.374" | 0.16" | 25,000 | Inverted Cone | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.051" | 0.051" | 70,000 | Ball | Diamond | 1 3/4" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.075" | 0.075" | 45,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.091" | 0.091" | 40,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.138" | 0.138" | 25,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 2 | 0.169" | 0.169" | 25,000 | Ball | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 3 | 0.094" | 0.157" | 25,000 | Cylindrical | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 3 | 0.181" | 0.157" | 25,000 | Cylindrical | Diamond | 1 5/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 4 | 0.098" | 0.393" | 25,000 | Taper | Diamond | 1 3/8" | 100 (Smooth) Silver | 0000000 | 00000 |
| 5 | 0.123" | 0.354" | 25,000 | Taper | Diamond | 1 3/8" | 100 (Smooth) Silver | 0000000 | 00000 |
Keyless Chucks for Dremel
Swap out accessories on your Dremel without tools.
| For Shank Dia. | Manufacturer Model Number | For Manufacturer Model Number | Mounting Hole Thread Size  | Body Material | Jaw Material | Each | |
| 1/32"-1/8" | 4486 | 100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 8220 | 1/4"-40 | Steel | Steel | 0000000 | 00000 |