Stem mounted wire wheel with 1/4 in (6.35mm) hex shank. Designed for easy access into narrow holes and confined area. Crimped style for light to medium duty applications. Removes rust, scale and paint in hard to reach areas. Use with any 1/3 in (6.35mm) diameter electric power drill or 01990 pneumatic (air) drill. Wire size: .012 in (.304mm); Maximum rpm: 6,000.