Super tough plastic bristle brush, embedded with abrasive, wear as they clean continually exposing fresh abrasive.The ideal tool to replace scrapers, wire wheels and chemical gasket stripper.Eliminates the danger of loose wires flying back at operator.Safer for parts and the environment then hazardous chemical strippers.Maximum operating speeds 25,000 RPMCan be used on all metalsBristles ride over surface cleaning contaminants without gouging surface