DESCRIPTION: Designed for use with angle grinders with a compatible thread and are suitable for industrial use and more specialist applications. Twist knot wire brushes are suited to heavier duty applications such as the removal of slag, rust, scale or even dried concrete. Wire: High tensile steel wire Type: Cup Face Diameter:125mm Thread: M14 x 2 Wire: 0.3mm Conforms to ISO 9001 and DIN EN1083-1 and 2 Maximum rpm 8500