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 81449, Scotch-Weld EPX Mixing Nozzle for DP2216, Helical White, 43 mL, 7100034271
3M 19674, Scotch-Seal Industrial Sealant 800, Reddish Brown, 5 oz Tube, 7000000792, 36/Case
Insize 4808, WIRE GAGE, 0-36(.3249~.0050"), 6928640330155
Air Turbine Tools 310RSV - 1/4" Router Hand Tool Series, 30,000RPM, 33430
3M 02405, Utility Cloth Sheet 211K, 9 in x 11 in 220 J-weight, 7010299775 
