The polishing pads are made from good quality cotton, with several layers of fabric sewn together in the center. They are soft and hold well together, 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. Polishing wheels fit all types of electric grinders, power drills or other rotary tools. The 1/4 " round shanks are hexagonal in shape so they will not come loose during polishing. Use with a variable speed drill can prevent too rapid rotation of the pad and premature tearing. Working with a polishing compound like wax will have a better polishing effect. Polishing pads are specially designed to polish recessed areas such as rims, motorcycle wheels, manifolds, surface oxidation, rust, tar and dirt of all kinds, giving your wheels discolored a beautiful shiny appearance. This polishing kit contains bearings of conical, columnar, mushroom and circular shapes, with a diameter ranging from 30 to 100 mm. The different shapes and diameters allow you to reach 99% of the corners, making the polishing job much easier. Ideal for wheels, fenders, bumpers and other hard to reach areas. The pads of the bearings are reusable. Wash them after use and dry them in the open air. They will do wonders again.