Carbide Burr Bits KangTeer 5pcs 8mm Dia 1/4" Shank Double Cut Tungsten Carbide Rotary File Cutting Burs Tool Rotary Drill Die Grinder Bits

Material:Tungsten steel Total length:60mm Shank length:35mm Shank diameter:6mm Grinding head diameter:8mm Can be processed cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, and marble, jade, bone and other non-metallic. Processing hardness up to HRA ? 85. Note: Supporting the drive tool fixture concentricity is better, is strictly prohibited and different use of the fixture supporting the use of the handle must be clamped, folder is running. The operation is strictly prohibited shaking phenomenon, cutting direction should move from right to left, do not Too much force to prevent bounce, impact, handle length of more than 80MM should be slow down operation, to prevent chip flying, please use protective glasses. Package include: 5pcs 1/4" Shank Rotary File