This Faithfull Wire Cup Brush has been designed for use with angle grinders that have a compatible thread. 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. Perfect for use on stainless steel. When standard wire brushes are used on stainless steel they can contaminate the material and cause rust. Conforms to ISO 9001, DIN EN 1083-1 and 2. Specification: Diameter: 65mm Thread: M14 x 2 Wire: Twist Knot Stainless Steel Grade 304, 0.50mm