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Various applications - processing all types of metal (including all types of hardened steel) and non-metal (such as marble, jade, bone) Perfect choice – for most work, it can be replaced with small grinding wheel, and no dust load, helps to improve work efficiency. Good performance workmanship, hardness: ≥85HRA; Good quality and highly polished, and can work out various shapes high-precision shape cavity. Durable 0026 practical - high efficiency, high-quality workmanship, long service life, good economic yields. Convenient use and operation - Easy to use, safe and reliable, can reduce work intensity. › See more product details; Product description Technical data: Material: carbide aluminium. Shaft diameter: 6 mm. Cutting diameter: 10 mm. Head shape: A/D/E/C/L/F. Speed: 6000 RPM ~ 400 RPM Processing hardness: ≥85HRA Box contents: 6 x Rotary burrs. Note: 1. Rotary file in pneumatic or electric tools, the speed is usually 6000-40000RPM, the tool needs to clamp tightly. 2. Cutting direction should be evenly moved from right to left, not like using grinding wheel as cutting and forth; Be sure not to force too much (the pressure is usually not more than 4 kg).; Product description Technical data: Material: carbide aluminium. Shaft diameter: 6 mm. Cutting diameter: 10 mm. Head shape: A/D/E/C/L/F. Speed: 6000 RPM ~ 400 RPM Processing hardness: ≥85HRA Box contents: 6 x Rotary burrs. Note: 1. Rotary file in pneumatic or electric tools, the speed is usually 6000-40000RPM, the tool needs to clamp tightly. 2. Cutting direction should be evenly moved from right to left, not like using grinding wheel as cutting and forth; Be sure not to force too much (the pressure is usually not more than 4 kg).; Technical data: Material: carbide aluminium. Shaft diameter: 6 mm. Cutting diameter: 10 mm. Head shape: A/D/E/C/L/F. Speed: 6000 RPM ~ 400 RPM Processing hardness: ≥85HRA Box contents: 6 x Rotary burrs. Note: 1. Rotary file in pneumatic or electric tools, the speed is usually 6000-40000RPM, the tool needs to clamp tightly. 2. Cutting direction should be evenly moved from right to left, not like using grinding wheel as cutting and forth; Be sure not to force too much (the pressure is usually not more than 4 kg).