High carbon crimped steel wire, Medium bristles, For use with grinding machines, Ideal for preparation and cleaning of metal surfaces, cleaning of welds, removal of scale, rust, corrosion, etc., Diameter: 4" (101.6mm), Thickness: 19/32" (15mm), Wire Thickness: 0.35mm, Anchor Hole Size: M14, Wire Length: 27mm, Maximum Speed: 10,000rpm