3M Floor Surfacing Rolls are recommended for general drum sanding. They are especially good for removing gummy finishes. This abrasive cuts fast.
3M 02530, Floor Surfacing Sheets, 12 in x 18 in, Easy Change, 100 grit, 7010384973
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.

Insize 1147-300WL, WIRELESS ELECTRONIC DEPTH GAGES WITH MOUNTING HOLES FOR EXTENSION BASE, 0-300mm/0-12", 6940561942798 
