Features： 1、Wide Application: Suitable for deburring and polishing cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials. 2、High Quality Material: Tungsten steel blade, high hardness, wear resistant and heat resistant, greatly improving work efficiency. 3、Strong Applicability: With blade teeth at the front end, go deep into complex workpieces and apply to more complex working environments. 4、Extended Shank Design: Deeper processing range, suitable for complete processing of pipes and impeller runners. 5、Versatile: It is mainly used on pneumatic or electric tools, and the working speed is generally 5000-6000 rpm. Specification： Item Type: Rotary File Material: Tungsten Steel Shank Diameter: Approx.6mm / 0.24in Application: Suitable for deburring and polishing cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials. Package List： 4 x Rotary File