3M Floor Surfacing Rolls are recommended for general drum sanding. They are especially good for removing gummy finishes. This abrasive cuts fast.
3M 02534, Floor Surfacing Sheets, 12 in x 18 in, Easy Change, 80 grit, 7010384974
$3.95
Factory Stock, 7-10 Day Leadtime
Hook-it II Floor Surfacing Abrasive Sheets are coated on heavyweight paper. Easy-to-use on rectangular floor sheet sanding machines. Hookit II backing provides positive locking to driving pad.

3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 76631, Roloc Disc 777F, TR, 3 in x NH, 36 YF-weight, 7000028339
3M 34118, 663FC, 2" X 120", 70u, Diamond Trizact Belt 7010509077
Standard Abrasives 701656, Cartridge RoII Mandrel, 3/16 in x 2 in x 1/4 in x 1-1/4 in x 4 in CM-18, 7010368730 
