Bristle discs are ideal for safely cleaning and stripping a wide variety of substances off of metal. The discs will easily cut through hardened enamel, paint, thick dried adhesives and layers of corrosion, without destroying the underlying material or compromising safety with dangerous flying wires.In addition, bristle discs do not clog up with substances being removed and give consistent finishes throughout the life of the discs.All bristle discs are colour coded by grade and are made of nylon embedded with abrasive to create an abrasive action. Each disc is flexible and easily conforms to contours and tight corners and angles4 1/2" bristle discs with 5/8"-11 threaded hubSame safety and efficiency benefits as other bristle discs but in a right angle grinder configurationIdeal for cleaning, delaminating, removing rust and oxidation and deburring a variety of hard and soft metals and plasticsAll discs have a maximum operating speed of 12 000 RPM