Faithfull X-LOCK Conical Wire Brush is for heavy-duty applications. Twist knot brushes are suitable for the removal of slag, rust, scale or even dried cement from welds, edges and grooves. For use on stainless steel surfaces, aluminium and non-ferrous metal surfaces. Using standard wire brushes on stainless steel can contaminate and cause the material to rust. Featuring the X-LOCK quick change system, ensuring a fast, reliable and effective one click change between tools when used with a compatible angle grinder. Specifications: Wire Type: Twist Knot Stainless Steel (304) . Diameter: 115mm. Fitting: X-LOCK. Wire Size: 0.5mm. Max. RPM: 12500. Technical Specs Wire Type: Twist Knot Stainless Steel (304) Diameter: 115mm Fitting: X-LOCK Wire Size: 0.5mm Max. RPM: 12500