3M Floor Surfacing Rolls are recommended for general drum sanding. They are especially good for removing gummy finishes. This abrasive cuts fast.
3M 09317, Regalite Floor Surfacing Rolls, 12 in x 50 yd, 752I, 40 Grit, 7010384135
$360.86
Factory Stock, 7-10 Day Leadtime
3M Floor Sanding Rolls offer great productivity and value on bare wood or nongummy finishes. They cut faster, run cooler and last longer than conventional rolls. The rolls feature the familiar purple Regalite mineral and tough paper backing.

3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M 34552, Cubitron II Net Sheet Roll, 150+, 80 mm x 10 m, 7100247337, 6 Rolls/Case
3M 05043, Cloth Belt 384F, 80+ XF-weight, 1/2 in x 12 in, Fabri-lok, Full-flex, 7100141435, 200 per case 
