First choice of metalworking pros for use in coarse sanding to fine polishing of the hard or ferrous metals. Ideal for removing old rust, scouring, deburring, finishing. Tough, rugged, aluminum oxide grain, bonded on flexible, jean weight, cloth backing. Follows contours, flexes during use without flaking off. Gives a very long use-life. Tears straight without shredding at edge. Mfg: Norton SPECS: 1" (2.5cm) or 1½" (3.8cm) wide.