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.

Insize 0130-L110, LIGHT METER (BASIC TYPE), 6974029776564
3M 76429, Roloc Disc 361F, 36 YF-weight, TR, 4 in, Die R400BB, 7000148152
3M 64324, Foil Tape 3340, Silver, 72 mm x 45.7 m, 3.9 mil, 7010335734
3M 05529, Scotch-Brite Roloc Surface Conditioning Disc, SC-DR, SiC Super Fine, TR, 2342493, 3 in, 7000028501, 100 per case
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series with Brake, 25,000RPM, 33425
3M 07148, Dual Airline Back-Mounted Breathing Tube SA-2500/07148(AAD), 7000002006, 1 EA/Case
3M 21639, PSA Cloth Disc 348D, 36 X-weight, 6 in x NH, Die 600Z, 7000148149
Standard Abrasives 714179, Aluminum Oxide Handy Roll, P240 J-weight, 1-1/2 in x 50 yd, 7100050575 
