General description These 8 pieces of 4-inch polishing wheels pads made of denim come with 3 different polishing compounds and a 1/4 inch drill shank, designed for use with a bench grinder. The compounds are color-coded for easy identification, allowing you to select the appropriate thickness based on your needs. The polishing process can achieve a mirror-like finish, and the wheels contain high anti-rust ingredients to enhance durability and reduce wear. Technical specifications Material: Cotton Polishing Wheel Thickness: 50 Ply (White), 36 Ply (Yellow), 30 Ply (Flannel) Drill Shank Size: 1/4 inch Measurement Error: +/- 1-3 cm Installation Soak the grinding wheel in water for a while before use to enhance performance. Ensure the polishing wheel is firmly installed before starting the machine. Start the polishing machine at low speed and gradually increase as needed. Usage Suitable for grinding and polishing various materials including metal, jewelry, hardware, stainless steel,