7/8" Cutoff Wheels | McMaster-Carr

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20,000 rpm to 29,999 rpm

30,000 rpm to 39,999 rpm

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13 Products

Miniature Dremel-Compatible Rotary Tool Cutoff Wheels for Ceramics


	Side View

Made of diamond abrasive, these wheels cut ceramics, tile, and other abrasive materials. Because they’re miniature, they work best to make small, precise cuts. Use them to make plunge cuts in the center of material or to make flush cuts. The higher the grit number, the finer the grit. Choose a coarser grit for fast cuts; choose a finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

				Grinding Wheel
	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Designation	Shape	Abrasive Material	Grit	Includes	Pkg. Qty.		Pkg.
For Ceramics







				7/8" Diameter

				0.007"	1/16"	21,000	Type 1	Straight	Diamond	220	—	1	1257A92	000000


				0.007"	1/16"	25,000	Type 1	Straight	Diamond	220	—	1	1257A33	00000
				0.011"	1/16"	25,000	Type 1	Straight	Diamond	150	—	1	1257A34	00000
				0.024"	1/16"	20,000	Type 1	Straight	Diamond	90	1/8" Shank Dia. Arbor	1	7683N11	00000

Miniature Dremel-Compatible Rotary Tool Cutoff Wheels for Metal


	Side View

Use these wheels to cut through metal such as aluminum, iron, stainless steel, and steel. Choose coarser grit for fast cuts; choose finer grit for smooth cuts.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

				Grinding Wheel
	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Designation	Shape	Abrasive Material	Grit	Pkg. Qty.		Pkg.
For Aluminum, Iron, Stainless Steel, and Steel







				7/8" Diameter

				0.009"	1/16"	21,000	Type 1	Straight	Aluminum Oxide	240	25	1257A15	000000


				0.015"	1/16"	21,000	Type 1	Straight	Aluminum Oxide	180	25	1257A16	00000

Dremel-Compatible Rotary Tool Blades for Ceramic

These blades have a continuous edge with diamond grit to cut through ceramics. Blades with a narrower width of cut make faster cuts with less material loss.

Rotary Tool Blades

	Arbor Hole				Material
Dia.	Size	Shape	Cut Wd.	Max. Rotation Speed, rpm	Abrasive	Body	Edge Style		Each
7/8"	1/16"	Round	0.007"	25,000	Diamond	Steel	Continuous	4301A21	000000
7/8"	1/16"	Round	0.011"	25,000	Diamond	Steel	Continuous	4301A22	00000

Rotary Tool Blades with Built-In Arbor

	Arbor				Material
Dia.	Size	Shank Shape	Cut Wd.	Max. Rotation Speed, rpm	Abrasive	Body	Edge Style		Each
7/8"	1/16"	Round	0.009"	22,000	Diamond	Steel	Continuous	4301A38	000000

Multipurpose Miniature Dremel-Compatible Rotary Tool Cutoff Wheels


	Side View

The silicon carbide abrasive on these wheels cuts soft metal, plastic, stone, and wood. They have a fiberglass mesh reinforcement that resists shattering during use for safer operation at high rpm. Choose a higher grit for precise cuts and a lower grit for rough cuts and material removal.

Warning: Use wheels that have a greater rpm rating than the no-load rpm of your tool.

				Grinding Wheel		Material
	Thk.	Arbor Hole Size	Max. Rotation Speed, rpm	Designation	Shape	Abrasive	Reinforcement	Grit	Pkg. Qty.		Pkg.
For Aluminum, Brass, Copper, Plastic, Stone, and Wood







				7/8" Diameter

				1/64"	1/16"	21,000	Type 1	Straight	Silicon Carbide	Fiberglass Mesh	120	20	1257A14	000000

Dremel-Compatible Rotary Tool Blades for Plastic

Style A

The segmented edge on these blades is coated with diamond grit for cutting plastic. They’re often used for plunge cuts into the center of your material and small, precise jobs, such as trimming 3D-printed parts.

0.007" Wide Cut—Blades with a .007” cut width are good for slow, smooth cuts.

0.011" Wide Cut—Blades with a .011” cut width are coated with coarser abrasives than blades with a .007" cut width. Use them for fast, rough cutting.

		Arbor Hole				Material
Style	Dia.	Size	Shape	Cut Wd.	Max. Rotation Speed, rpm	Abrasive	Body	Edge Style		Each
A	7/8"	1/16"	Round	0.007"	25,000	Diamond	Stainless Steel	Segmented	4301A25	000000
A	7/8"	1/16"	Round	0.011"	25,000	Diamond	Stainless Steel	Segmented	4301A26	00000

Multipurpose Dremel-Compatible Rotary Tool Blades

Image of Product. Front orientation. Rotary Tool Blades. For Copper, For Wood, For Plastic, For Rotary Tools, For Aluminum, For Brass.

Cut plastic, wood, and soft metal such as aluminum, brass, and copper. Choose blades with more teeth for a smoother cut.

	Arbor Hole					Material
Dia.	Size	Shape	No. of Teeth	Cut Wd.	Max. Rotation Speed, rpm	Tooth	Body		Each
7/8"	1/8"	Round	80	0.015"	35,000	Steel	Steel	6448A12	000000