Polish the inside of cylinders, stampings, and tapered objects. Use on both metal and plastic articles. Made of unbleached muslin. Round-end and square-end styles use both the end and the edge for polishing. Length is approximately the same as diameter (for tapered buffs, at large end). All buffs are used on a tapered spindle or chuck. Tripoli, Rouge, greaseless, or other compounds can be used as well as glued-on abrasives. Maximum RPM is 2400 for the 6" buffs; 3600 for all others.