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 36518, Green Corps Abrasive File Belt, 80 Grit, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100226321, 20 Belts Per Carton, 5 Cartons Per Case
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
3M 16582, Accuspray Atomizing Head, Blue, 1.2 mm, 7010363219
3M 19772, Utility Cloth Sheet 314D, 9 in x 11 in P80 J-weight, 7000000359
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U
3M 62714, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 50 mL Tube, 7100039216, 10/case
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
Dynabrade 77774 5" Dia. x 7/8" Center Hole, 80 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack
Dynabrade 51857 .7 hp Trim Router (Complete), 20,000 RPM, 1/4 Collet
3M 04018, Unitized Wheel Mandrel 936, 2-1/16 in x 1/4 in x 3/4 in Plastic, 7000046309
Insize 0110-1125, ANEMOMETER, 6974029776595
Dynabrade 51810 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 1000,000 RPM, 1/8" Collet
3M 19770, Utility Cloth Sheet 314D, 9 in x 11 in P120 J-weight, 7000000358 
