High carbon knotted steel twisted 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: 3" (76.2mm), Thickness: 19/32” (15mm) Wire Thickness: 0.35mm, Anchor Hole Size: M14, No. Of Braids: 18, M14, Wire Length: 18mm, Maximum Speed: 12,000rpm