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.

Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628
Dynabrade 90211 1/8" W x 18" L 60 Grit A/O DynaCut Belt, 50/pack
ACS Diamond Cloth Belt, CX1250 1/2" X 18" 125U
Dynabrade 91166 1/2" W x 13" L 80 Grit A/O DynaCut Belt, 50/pack 
