Floor pads are manufactured from synthetic and natural fibers. The synthetic fibers used in floor pads are nylon and polyester. Natural-fiber pads are made of hair fibers blended with synthetic fibers. As pads are being manufactured, a bonding agent is applied to the fiber. Minerals, added during the manufacturing process, attach to these coated fibers, giving the pad its abrasive character. The degree of abrasiveness desired is achieved by adding more or less of different size minerals. The products feature a variety of colors used to identify pads. These colors graduate from the most abrasive pad (black - darkest color) to the least abrasive pad (white - lightest color). If you have a job that requires stripping, you would choose a black pad. If you need to polish a floor, a light colored pad would be recommended. While the quality of floor pads vary from one manufacturer to the next, you can be assured that Blue Ribbon pads are made from the finest materials available. Our pads are economical, long lasting and extremely durable. Blue Ribbon pads have a 3 inch center hole punch-out plug (bolt hole for high speed machines also available) with a thickness of approximately 1 inch.