High-quality materials: It is made of steel and diamond particles, strong and durable, corrosion-resistant, rust-proof, sturdy and durable, and can be used for a long time. Emery: The surface of the file is plated with emery. The density of emery particles is uniform, which can effectively improve the wear resistance of the file. Package Includes: 10 Packs of different shapes, flat, semicircle, triangle, square, round shape, pointed flat, double semicircle, willow leaves, knife type, oval to meet your different polishing needs. Non-slip Handle: Comfortable non-slip rubber handle, it can maintain a firm grip even in wet conditions, feel comfortable and avoid scratches caused by the angle of the handle. Wide Range of Uses: Used for roughing, deburring, grinding and polishing of stone, furniture and wood products, metal and automobiles.