3M Floor Surfacing Rolls are recommended for general drum sanding. They are especially good for removing gummy finishes. This abrasive cuts fast.
3M 02533, Floor Surfacing Sheets, 12 in x 18 in, Easy Change, 60 grit, 7010296622
This item has been Discontinued.
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.

Standard Abrasives 78529, Ceramic Pro Type 29 Flap Disc, 645141, 7 in x 5/8-11 80 Y-weight, 7010331466
3M 29859, Sanding Screen, 100 grit, 12 in x 18 in, 7100160861 
