3M Floor Surfacing Rolls are recommended for general drum sanding. They are especially good for removing gummy finishes. This abrasive cuts fast.
3M 06875, Floor Surfacing Rolls, 8 in x 25 yd, 20 grit, 7010401383
$174.05
Factory Stock, 7-10 Day Leadtime
3M Resinite Floor Surfacing Rolls are for drum sanding machines on commercial and residential jobs. Use for general sanding. Durable mineral on paper or combination backing. Fast cuts, better finish, longer life, time savings.

Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 16573, Accuspray Air Flow Control Valve, 7000042715
Dynabrade 91163 3/8" W x 13" L 80 Grit A/O DynaCut Belt, 50/pack 
