The desired length of the strip can be torn from the roll for a specific application. Most grades have a light, J-weight cloth backing that provides the flexibility needed to conform to circular edges, angles, or other contours. Rolls in grades P50 or P60 have a slightly stiffer X-weight backing suitable for more coarse sanding applications. Cloth remains durable even when bent or rolled, without tearing or shelling, but strips can be torn by hand when a smaller piece is needed, without compromising the sanding surface.
Aluminum oxide is a popular choice among industrial professionals because of its fast cut-rate and long life. This mineral makes a tough, durable abrasive that self-fractures to expose fresh cutting edges, whereas traditional natural abrasives dull more quickly. Aluminum oxide is suitable for a wide variety of materials in both woodworking and metalworking, including ferrous alloys. Aluminum oxide abrasive can be used on ferrous and non-ferrous metals, wood, and plastic.

3M 22970, Disc Holder Adapter 9, 5/8-11 External 3/8-24 Internal, 7000046093
3M 27623, Scotch-Brite Radial Bristle Brush Replacement Disc, T-A 80 Refill, 6 in, 7100138194, 40/Carton
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
3M 36876, Self-Stick Liquid Protection Fabric, Blue, 4 in x 300 ft perroll, 7100169348, 6 Rolls Per Pack
3M 19772, Utility Cloth Sheet 314D, 9 in x 11 in P80 J-weight, 7000000359 
