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.

Dynabrade 52374 4" (102 mm) Dia. Straight-Line Type 1 Wheel Grinder, 1 HP, 15,000 RPM, 3/8"-24 Spindle
Dynabrade 91435 1/4" W x 24" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade 53261 - 7" Dia. Vertical Disc Sander
Dynabrade Nitro Series NF1 Nitrofile Abrasive Belt Tool
Dynabrade 63209 33" (84 cm) W x 60" (152 cm) L Downdraft Sanding Table, 460 V (AC)
Dynabrade 62369 Gasket
Dynabrade 96227 Swivel Fitting
Standard Abrasives 712149, Aluminum Oxide Handy Roll, P100 J-weight, 1-1/2 in x 50 yd, 7010295370 
