The polishing pads are made from good quality cotton, with multiple layers of fabric sewn together in the center. They are soft and hold together well, and will make your favorite things shine without any damage. Suitable for sanding and polishing the surface of metal, jewelry, stainless steel, aluminum, wood, plastic, ceramics, glass, watches and any chrome or painted items. The polishing wheels fit all types of electric grinders, electric drills or other rotary tools. The 1/4" round shanks are hex shaped so they won't come loose when polishing. Using with a variable speed drill can prevent the pad from spinning too fast and tearing prematurely. Work with polishing compound like wax will have a better polishing effect. Polishing pads are specially designed for polishing recessed areas such as rims, motorcycle wheels, manifolds, surface oxidation, rust , tar and dirt of all kinds, giving your discolored wheels a nice shiny look. This polishing kit contains tapered, columnar, mushroom and circular shaped pads with a diameter ranging from 30 to 100 mm. The different shapes and diameters allow to reach 99% of the corners, making the job of polishing much easier. Ideal for wheels, mudguards, bumpers and other hard to reach areas. The pads of the bearings are reusable. Wash them after use and air dry them. They will do wonders again.