Description 10pcs 3mm Shank HSS Router Bit Rotary Burr File Set Milling Drill Cutter for WoodworkingSpecification MaterialHSSTotal Length39mmShank Diameter3mmQuantity10pcsFeatures Purpose stone carving jade carving grinding polishing Suitable for woodworking Safety Tips 1 Carbide burrs speed is generally 6000 40000 rev min when used on pneumatic or electric tools the tool must be clamped tight 2 Cutting direction should move from right to left smoothly do not cut back and forth as using the wheel be careful not to use too much force pressure is generally not more than 4 kg Package Included 10 x Rotary BurrMore Details