WHOLESALE 2 PC 3 inchKNOTTED & CRIMPED CUP WHEEL 1pc 3 inch brass plated crimped wire cup brush & 1pc knotted steel wire cup brush. Ideal for removal of rust, corrosion and paint. 1/4 inch shank fits all drills. Hardened steel wire for reduced wire breakage & long life. Maximum 4500 RPM.Illinois Industrial Tools