Miniature Multipurpose Grinding Bits
Grind a variety of materials, from metal to ceramic and plastic, in precise, detailed jobs. These bits have a diamond abrasive, so they’re extremely hard. Their 3/32" diameter shank and small head allow them to get into intricate spots. 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.

Head | Abrasive | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Dia. | Lg. | Max. Speed, rpm | Shape | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Each | ||
For Aluminum, Brass, Bronze, Ceramics, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | ||||||||||
3/32" Shank Dia. | ||||||||||
6 | 21/32" | 1/16" | 21,000 | Cylindrical | Diamond | Vitrified Ceramic | 1 1/2" | 120 (Smooth) Yellow | 0000000 | 000000 |
6 | 21/32" | 3/16" | 21,000 | Cylindrical | Diamond | Vitrified Ceramic | 1 1/2" | 120 (Smooth) Yellow | 0000000 | 00000 |

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 |
Multipurpose Grinding Bits

The diamond abrasive in these bits is extremely hard and can grind metal, ceramic, and plastic. They’re 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 | Abrasive | ||||||||
---|---|---|---|---|---|---|---|---|---|
Dia. | Lg. | Max. Speed, rpm | Shape | Material | Bond Material | Shank Lg. | Grit (Surface Texture) | Each | |
For Aluminum, Brass, Bronze, Ceramics, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | |||||||||
1/8" Shank Dia. | |||||||||
21/32" | 1/16" | 21,000 | Cylindrical | Diamond | Vitrified Ceramic | 1 1/2" | 320 (Extra Smooth) Yellow | 0000000 | 000000 |
21/32" | 3/16" | 21,000 | Cylindrical | Diamond | Vitrified Ceramic | 1 1/2" | 320 (Extra Smooth) Yellow | 0000000 | 00000 |