The 3M Paper Drywall Sheets are designed for sanding drywall joint compounds (light or regular), patching compounds, and plaster. They are made with aluminum oxide, a tough synthetic mineral that cuts cleanly and leaves a smooth finish. The grit is 150C.
3M 99431, Drywall Sanding Sheet 99431NA, 4-3/16 in x 11-1/4 in, 150 Grit, 7000047933, 25 sheets/pack
$7.52
Factory Stock, 7-10 Day Leadtime, Priced Per Pack
3M Drywall Sheets are designed for sanding drywall joints, patching compounds and plaster. Made with sharp synthetic mineral for long-lasting performance. Pre-cut 4-3/16 in x 11-1/4 in and die-cut to fit most drywall sanding tools.

3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
Dynabrade 79202 1/2" W x 12" L Belt Assortment Pak
Standard Abrasives 713276, Aluminum Oxide Handy Roll, P180 J-weight, 2 in x 50 yd, 7100037246 
