Aluminum oxide is a very hard mineral that maintains sharp points on the grains much longer than natural abrasives such as emery or garnet. The abrasive grains are adhered to the sandpaper with some space between them, known as open-coat construction, to minimize the buildup of dust on the surface of the paper, which would otherwise load the abrasive points. Loading often results from sanding soft materials and can clog the abrasive, shortening the usable life of the sandpaper sheet.
3M 02116, Paper Sheet 346U, 60 D-weight, 9 in x 11 in, 7000120221
$1.11
Factory Stock, 7-10 Day Leadtime
3M Paper Sheet 346U is constructed of aluminum oxide and comes in a range of grades and sizes to accommodate many different projects. The paper backing is durable for coarse sanding, yet flexible enough to be used on curved surfaces. Its cut-rate and durability make this an excellent choice for blending the joints of connecting pieces in wood- and metal-working.

3M 94701, Cubitron ll Cloth Belt 947A, 80+ X-weight, 1/4 in x 24 in, Fabri-lok, Single-flex, 7100141690, 200 per case
3M 22405, Roloc Disc 361F, P100 YF-weight, TR, 3 in, Die R300V, 7000045102
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 05741, Hookit Hand Block, 2-3/4 in x 7-3/4 in, 7000045716
Dynabrade 40320 Dynafile II Abrasive Belt Tool
ACS Diamond Cloth Belt, CX1250 3" X 90" 9U
3M 36517, Green Corps Abrasive File Belt, 60 Grit, 1/2 in x 18 in (12.7mm x 457.2 mm), 7100226310, 20 Belts Per Carton, 5 Cartons Per Case
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
Insize 4209-4, LONG HANDLE TELESCOPING GAGE, 1-1/4 ~ 2-1/8", 6928640311567
3M 45038, Wheel Adapter Kit No.3, 5/8-11 External, 7000028423
3M 26132, PPS Series 2.0 Adapter, Type S37, 5/8 Male, 11 UNC Modified, 7100135949
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M 03647, Scotch-Brite Edger Disc Pad, 7 in x .875 in, 7000133920
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
Standard Abrasives 708751, PSA A/O Disc, 12 in x NH, 60, 7010370081 
