Rubber-Cushioned Abrasive Grinding Bits for Metals
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The abrasive grains in these bits are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits. Bits are also known as mounted points and die grinder bits. Head diameter is measured at the widest point.
Bits for steel are aluminum oxide, which is the most common abrasive used in grinding metal.
Bits for aluminum, brass, and bronze are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup.
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 No. | Shape | Material | Bond Material | Shank Lg. | Choose a Grit (Surface Texture) | Each | ||
For Steel | |||||||||||
1/8" Shank Dia. | |||||||||||
1 | 1/8" | 1/4" | 35,000 | W142 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 000000 | |
1 | 1/8" | 1/4" | 35,000 | W144 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/8" | 3/8" | 105,000 | W145 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 1/8" | 1/2" | 35,000 | W146 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 3/16" | 1/2" | 70,500 | W154 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 1/4" | 1/4" | 81,370 | W160 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 1/4" | 1/2" | 60,000 | W163 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 1/4" | 3/4" | 45,900 | W164 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 3/8" | 3/8" | 54,000 | W175 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 3/8" | 1" | 26,250 | W178 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/2" | 3/8" | 41,020 | W184 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
1 | 1/2" | 1/2" | 34,500 | W185 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
2 | 1/4" | 5/8" | 60,000 | B53 | Taper | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
3 | 5/16" | 3/8" | 68,400 | B104 | Inverted Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
4 | 3/16" | 3/16" | 104,250 | B123 | Ball | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 0000 | |
4 | 3/8" | 3/8" | 35,000 | B122 | Ball | Aluminum Oxide | Rubber | 1 1/2" | 80 (Smooth) Silver | 00000000 | 00000 |
5 | 3/16" | 5/16" | 35,000 | B45 | Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
6 | 1/8" | 1/4" | 35,000 | B96 | Flat-Top Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
6 | 1/8" | 3/8" | 35,000 | B97 | Flat-Top Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
7 | 1/8" | 5/16" | 35,000 | B46 | Oval | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
8 | 3/8" | 1/2" | 35,000 | B112 | Pear | Aluminum Oxide | Rubber | 1 1/2" | 80 (Smooth) Silver | 00000000 | 00000 |
1/4" Shank Dia. | |||||||||||
1 | 1/2" | 2" | 24,000 | W189 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 3/4" | 2" | 18,750 | W208 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1" | 1" | 34,500 | A38 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1" | 2" | 15,900 | W222 | Cylindrical | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 3/4" | 1 1/8" | 35,000 | A5 | Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 1 1/8" | 1 1/8" | 33,950 | A13 | Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 1 1/4" | 1 1/4" | 30,560 | A4 | Cone | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
12 | 1/4" | 1 1/16" | 35,000 | A15 | Taper | Aluminum Oxide | Rubber | 1 1/2" | 00000000 | 00000 | |
For Aluminum, Brass, Bronze | |||||||||||
1/8" Shank Dia. | |||||||||||
1 | 1/8" | 1/4" | 35,000 | W142 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/8" | 1/4" | 35,000 | W144 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/8" | 3/8" | 105,000 | W145 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/8" | 1/2" | 35,000 | W146 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 3/16" | 1/2" | 70,500 | W154 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/4" | 1/4" | 81,370 | W160 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/4" | 1/2" | 60,000 | W163 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/4" | 3/4" | 45,900 | W164 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 3/8" | 3/8" | 54,000 | W175 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 3/8" | 1" | 26,250 | W178 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/2" | 3/8" | 41,020 | W184 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1/2" | 1/2" | 34,500 | W185 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
2 | 1/4" | 5/8" | 60,000 | B53 | Taper | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
3 | 5/16" | 3/8" | 68,400 | B104 | Inverted Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
4 | 3/16" | 3/16" | 104,250 | B123 | Ball | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 3/16" | 5/16" | 35,000 | B45 | Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
6 | 1/8" | 1/4" | 35,000 | B96 | Flat-Top Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
6 | 1/8" | 3/8" | 35,000 | B97 | Flat-Top Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
7 | 1/8" | 5/16" | 35,000 | B46 | Oval | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1/4" Shank Dia. | |||||||||||
1 | 1" | 1" | 34,500 | A38 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
1 | 1" | 2" | 15,900 | W222 | Cylindrical | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 3/4" | 1 1/8" | 35,000 | A5 | Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 1 1/8" | 1 1/8" | 33,950 | A13 | Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
5 | 1 1/4" | 1 1/4" | 30,560 | A4 | Cone | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 | |
12 | 1/4" | 1 1/16" | 35,000 | A15 | Taper | Silicon Carbide | Rubber | 1 1/2" | 00000000 | 00000 |
Rubber-Cushioned Abrasive Grinding Bit Sets for Metals
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The bits in this set have rubber blended into the abrasive, which cushions during grinding to produce a smooth to extra-smooth surface texture.
Aluminum oxide bits are for grinding hard metals.
Silicon carbide bits are for grinding soft metals.
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.
Abrasive | |||||||
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No. of Pieces | Includes | Max. Speed, rpm | Material | Bond Material | Grit (Surface Texture) | Each | |
For Steel, Aluminum, Brass, Bronze | |||||||
126 | 30 Silicon Carbide and 10 Aluminum Oxide 15/16" Lg. x 1/4" Dia. Bits, 30 Silicon Carbide and 10 Aluminum Oxide 7/8" Dia. Tapered-Edge Discs, 30 Silicon Carbide and 10 Aluminum Oxide 7/8" Dia. x 1/8" Thick Straight Discs, Two Spiral Mandrels with Hex Nut, Four 1/8" Dia. Mandrels, Paper and Plastic Case | 21,000 | Aluminum Oxide, Silicon Carbide | Rubber | 120 (Smooth) to 240 (Extra Smooth) | 0000000 | 000000 |
For Steel, Aluminum, Brass, Bronze, Copper, Stainless Steel, Iron, Nickel, Titanium | |||||||
68 | 8 each: No. 4, No. 6, No. 8, No. 10, No. 11, No. 12, No. 14, and No. 15 Grinding Bits, Two No. 4 Mandrels, Two No. 6 Mandrels, Plastic Case | 25,000 | Silicon Carbide | Rubber | 46 (Rough) to 240 (Extra Smooth) | 0000000 | 000000 |
For Steel, Aluminum, Brass, Copper, Stainless Steel | |||||||
24 | 8 each: A2, A25, W220 Grinding Bits with 1 1/2" Lg. × 1/4" Dia. Shank, Cardboard Block Stand | 25,500 | Aluminum Oxide | Rubber | 46 (Rough) to 100 (Smooth) | 0000000 | 000000 |
36 | 12 each: B52, B121, W185 Grinding Bits with 1 1/2" Lg. × 1/8" Dia. Shank, Cardboard Block Stand | 34,500 | Aluminum Oxide | Rubber | 46 (Rough) to 100 (Smooth) | 0000000 | 000000 |
For Steel, Brass, Bronze, Copper, Stainless Steel, Iron, Nickel, Titanium | |||||||
63 | 15 each: B52, W154, W164, W185 Grinding Bits with 1 1/2" Lg. × 1/8" Dia. Shank, One W220 Grinding Bit with 1 1/2" Lg. × 1/4" Dia. Shank, Two W179 Grinding Bits with 1 1/2" Lg. × 1/4" Dia. Shank, Plastic Case | 25,500 | Aluminum Oxide | Rubber | 46 (Rough) to 180 (Smooth) | 0000000 | 000000 |
Rubber-Cushioned Abrasive Grinding Bits without Shank for Metals
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Bits thread onto shanks so you can quickly switch head shapes without removing the shank. The abrasive grains are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits.
Bits are silicon carbide, which cuts through soft metals without generating much heat or causing material buildup. 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.
Bits | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Abrasive | Shanks | |||||||||||
Dia. | Lg. | Arbor Hole Thread Size | Max. Speed, rpm | Shape | Material | Bond Material | Choose a Grit (Surface Texture) | Pkg. Qty. | Pkg. | Each | |||
For Aluminum, Brass, Bronze | |||||||||||||
1 | 1/4" | 7/8" | 2-56 | 20,000 | Cylindrical | Silicon Carbide | Rubber | 10 | 0000000 | 00000 | 0000000 | 00000 | |
2 | 9/32" | 1" | 2-56 | 20,000 | Taper | Silicon Carbide | Rubber | 10 | 0000000 | 0000 | 0000000 | 0000 | |
2 | 3/8" | 5/8" | 2-56 | 20,000 | Taper | Silicon Carbide | Rubber | 10 | 0000000 | 0000 | 0000000 | 0000 | |
2 | 3/8" | 1" | 5-40 | 20,000 | Taper | Silicon Carbide | Rubber | 10 | 0000000 | 00000 | 0000000 | 0000 |
Miniature Rubber-Cushioned Abrasive Grinding Bits for Metals
Produce a smooth surface on precise, intricate grinding jobs. These bits are cushioned by rubber, so they create a smoother finish than other bits with similar grits. Made with a diamond abrasive, they last 10 to 20 times longer than rubber-cushioned bits without diamond. Their 3/32" diameter shank and small head allow them to get into intricate spots. 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.
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Head | Abrasive | ||||||||
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Dia. | Lg. | Max. Speed, rpm | Shape | Material | Bond Material | Shank Lg. | Each | ||
120 Grit (Smooth) Green | |||||||||
Aluminum, Brass, Bronze, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium | |||||||||
3/32" Shank Dia. | |||||||||
1 | 7/32" | 1/2" | 21,000 | Cone | Diamond | Rubber | 1 1/4" | 0000000 | 000000 |
2 | 19/32" | 3/16" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
3 | 19/32" | 1/4" | 15,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 11/16" | 1/8" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 1 1/32" | 1/16" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 1 1/32" | 3/32" | 15,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
320 Grit (Extra Smooth) Blue | |||||||||
Aluminum, Brass, Bronze, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium | |||||||||
3/32" Shank Dia. | |||||||||
1 | 7/32" | 1/2" | 21,000 | Cone | Diamond | Rubber | 1 1/4" | 0000000 | 00000 |
2 | 19/32" | 3/16" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
3 | 19/32" | 1/4" | 15,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 11/16" | 1/8" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 1 1/32" | 1/16" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 1 1/32" | 3/32" | 15,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1,000 Grit (Extra Smooth) Yellow | |||||||||
Aluminum, Brass, Bronze, Copper, Iron, Nickel, Stainless Steel, Steel, Titanium | |||||||||
3/32" Shank Dia. | |||||||||
1 | 7/32" | 1/2" | 21,000 | Cone | Diamond | Rubber | 1 1/4" | 0000000 | 00000 |
2 | 19/32" | 3/16" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
3 | 19/32" | 1/4" | 15,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 11/16" | 1/8" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 1 1/32" | 1/16" | 21,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
4 | 1 1/32" | 3/32" | 15,000 | Disc | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
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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 |
Long-Life Rubber-Cushioned Abrasive Grinding Bits for Metals
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A diamond abrasive that's bonded to a rubber cushioning makes these bits last 10 to 20 times longer than rubber-cushioned bits without diamond. Because they’re cushioned during grinding, these bits produce a smoother surface texture than other bits with similar grits. 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. | Each | |
180 Grit (Smooth) Green | ||||||||
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, Titanium | ||||||||
1/8" Shank Dia. | ||||||||
11/16" | 1/8" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 000000 |
1" | 5/64" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1" | 3/32" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
320 Grit (Extra Smooth) Blue | ||||||||
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, Titanium | ||||||||
1/8" Shank Dia. | ||||||||
11/16" | 1/8" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1" | 5/64" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1" | 3/32" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1,000 Grit (Extra Smooth) Yellow | ||||||||
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, Titanium | ||||||||
1/8" Shank Dia. | ||||||||
11/16" | 1/8" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1" | 5/64" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
1" | 3/32" | 15,000 | Cylindrical | Diamond | Rubber | 1 1/2" | 0000000 | 00000 |
Miniature Multipurpose Grinding Bit Sets
Best for intricate, precise grinding jobs on metal, ceramic, and plastic, these sets include diamond abrasive bits with different head shapes. Their 3/32” diameter shank and small head make them great for tasks with fine details.
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.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/556/5564n11-@halfx_1707323377.png?ver=imagenotfound)
Abrasive | ||||||
---|---|---|---|---|---|---|
No. of Pieces | Includes | Material | Bond Material | Grit (Surface Texture) | Each | |
For Aluminum, Brass, Bronze, Ceramics, Copper, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | ||||||
3/32" Shank Dia. | ||||||
6 | Two Cylindrical Grinding Bits with 1 1/4" Shank Lg., One Inverted Cone Grinding Bit with 1 1/2" Shank Lg., One Cone Grinding Bit with 1 1/2" Shank Lg., One Ball Grinding Bit with 1 1/2" Shank Lg., One Taper Grinding Bit with 1 3/8" Shank Lg., Plastic Block Stand | Diamond | Vitrified Ceramic | 120 (Smooth) Yellow | 0000000 | 0000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/434/4344a38-@halfx_1706303533.png?ver=imagenotfound)
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 |
Arbors for Rubber-Cushioned Abrasive Grinding Bits
![](/prerenderstable/mvPRE/contents/gfx/imagecache/477/4777a34c2-a05c-digital-master1569016342-p9@halfx_637046205825881694.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/477/4777a34p1-upa05-@halfx_637641138910925496.png?ver=imagenotfound)
Thread rubber-cushioned grinding bits onto one of these arbors and switch between bits without removing the arbor from your tool. Arbors are also known as mandrels.
For technical drawings and 3-D models, click on a part number.