Norton|Saint-Gobain Abrasives Rapid Polish felt polishing discs feature premium quality, pressed, hardened, thick felt material for creating smooth surfaces with single digit Ra and mirror finish shine. At 2,000 to 3,000 RPM, the discs stay cool and do not produce vibration, ensuring optimal finishes. Soft felt material makes the discs ideal for final finishing. They are available in depressed center discs with a 5/8”-11 or 7/8″ hole, and in 2 in. or 3 in. TR (Type III) quick-change discs. For enhancing the finish even further, Rapid Polish polishing compound is available.