Burrs, Conical Point, Single Cut, Length 22.2 Mm, Thickness 12.7 Mm, Made Of Alloy Steel. Designed For Professionals And Diy Enthusiasts.Includes 6 Common Shapes: Domed Cylinder, Rounded Shaft, Concave Arch With Ball Point, Cone, Cylinder, Inverted Cone.Dual Chamber Is More Suitable For Materials Of Relatively Low Density.Universal Size - 6Mm Shank, Compatible With All Electric And Cordless Drills, Air Tools, Grinders And Other Rotary Tools. Durable And Reliable - Machining Hardness Reach Up To Hra85. Can Replace A Small Grinding Wheel For Most Jobs, Without Creating Dust Pollution. Processing All Types Of Metals (Including All Kinds Of Hardened Steel) And Non-Metallic Materials (Such As Marble, Bone, Jade) . Use On Drills, Presses, Lathes, Manual Or Flexible Shaft Electric Or Pneumatic Devices. Can Replace A Small Grinding Wheel For Most Jobs, Without Creating Dust Pollution. Safe And Reliable, Can Reduce Labor Intensity.