Descriptions: Silicone material, corrosion-resistant, good heat dissipation performance and stability Silicone grinding head is made of diamond powder and silicone, the material is very fine and soft, and can only be used to grind very smooth surfaces It can be installed on power tools such as grinders and grinding machines for deburring, surface grinding, sharpening, polishing and time saving. It can be used for polishing gold and silver jewelry, polishing nail polishing, jade polishing and other soft materials, and polishing high hardness materials Tips: The new corundum grinding bit should be tried at a low speed before use. If there is a jumping problem, do not continue to use it. Please press gently and avoid shaking. The corundum grinding bit is used to grind workpieces. If excessive force is applied, the grinding powder is not easy to remove. Flying chips may be generated during use. Please use jigs, non-slip finger stall, and wear protective glasses when using this corundum grinding bit. Specifications: Material: Silicone, Diamond Sand Shape: Pointed Granularity: 80 Grit Shank Finish: Nickel Plated Shank Material: Carbon Steel Shank Diameter: 2.35mm / 1/9-inch Head Diameter: 6mm / 1/4-inch Head Length: 16mm / 0.63-inch Total Length: 50mm / 2-inch Required Line Velocity: higher than 10-20m/s Package: 1 Packs of Mounted Grinding Point Stone Heads