PFERD stem-mounted miniature brush is perfect for precision applications required in many industries including jewelry, electronics, medical and aerospace. Precision miniature brush in soft natural bristle for light cleaning, and polishing. May be used with abrasive or polishing pastes. Specification: Brush shape/ form: End; Diameter (inches): 3/16; Stem diameter (inches): 1/8; Trim length (inches): 5/16; Recom. speed [RPM]: 5,000 - 10,000; MSFS max. [RPM]: 25,000.