Features 1、Efficient Use: Ensuring smoother grinding performance under high speed, the rotary file enables high work efficiency. 2、Broad Utility: Applied to cleaning welding scar, removing burr, chamfering and forming, metal rust removal and so on. 3、10pcs in Pack: Including 10pcs different grinder bit, which can cut out various shapes to meet your various work needs. 4、Perfect Match: With universal round shank to work with various power tools, and the changing is also very convenient. 5、Good Material: Using premium tungsten carbide material, very durable with wearing, heat and suits for long term use. Specification Item Type: Rotary File Material: Tungsten Carbide Application: Used for cleaning welding scar, removing burr, chamfering and forming, metal rust removal and other occasion. Package List 10 x Rotary File 1 x Plastic Box