Brass Plated Steel Cup Brush, M14, 65x0, 30 mm. -Cup-type brush, made of brass-plated steel wire. Strong and durable. -Brush/wire diameter: 65 mm. /0.30mm -Max. Maximum speed: 8.500 RPM. -Thread: M14. -When using brushes, all people in the work area must wear protective equipment. -Ideal for treating surfaces such as metal and stone. Deoxidation work, paint stripping, descaling, rust removal, etc. -Also indicated for descaling and removing burrs in welding, cleaning and surface preparation.