Product Description Material: Bearing Steel Color: Silver + Black Shank Size: 6Mm Round Shank Handle Length: 30Mm Cutting Edge Diameter: 12.7 Mm Total Length: 55 Mm Long Life: More Than 200 Times The Wheel. Uses: Clean Burrs And Burrs During Casting, Forging, Welding, Etc. Mechanical Bore Surfaces. Package Included: 6Pcs Rotary Tiller 1. Rotary End Mills, Conical Tip, Single Cut, Length 22.2Mm, Thickness 12.7Mm, Made Of Alloy Steel. Designed For Professionals And Diy Enthusiasts. 2. Includes 6 Common Shapes: Domed Cylinder, Round Shaft, Concave Arch With Ball Point, Cone, Cylinder, Inverted Cone. 3. Double Chamber Is More Suitable For Relatively Low Density Material. 4. Universal Size - 6Mm Shank, Compatible With All Electric And Cordless Drills, Air Tools, Grinders And Other Rotary Tools. Durable And Reliable - Machining Hardness Up To Hra85. Can Replace A Small Grinding Wheel For Most Jobs, Without Creating Dust Pollution. 5. Processing Of All Types Of Metals (Including All Kinds Of Hardened Steel) And Non-Metallic Materials (Such As Marble, Bone, Jade). Use On Drills, Presses, Lathes, Electric Or Pneumatic Manual Devices Or With Or Flexible Shaft. Can Replace A Small Grinding Wheel For Most Jobs, Without Creating Dust Pollution. Safe And Reliable, Can Reduce Labor Intensity.