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 27468, EMI Copper Foil Shielding Tape 1181, 1 in x 18 yd (25,40 mm x 16,5 m), 7000132169
3M 80510, Roloc Disc 777F, P120 YF-weight, TR, 1 in, Die R100N, 7000045622
Dynabrade 92768 4" W x 150' L 60 Micron A/O Microfinishing Film DynaCut Roll
3M 94962, Cubitron II Roloc Fibre Disc 987C, 80+, TR, 2 in, Die R200P, 7100063615
Dynabrade 92758 3" W x 150' L 9 Micron A/O Lapping Film DynaCut Roll
Dynabrade 94873 Vacuum Hose by the Foot
Dynabrade 54972 Vane Set (5pk)
3M 10455, Cloth Sheet 481W, 220, 9 in x 11 in, 7010294811 
