This could be a good one for you George. I have a couple of Carroll drums, almost the same as the Axy ones. Had them for a lot of years and when I managed to damage the rubber surface on one of them I contacted Carroll and they sent me enough to do several repairs as it is a stick on covering. When I change the drums I just spin the one in use off of the mandril and the other one on in its place. It only takes a few seconds and the abrasive change is also very quick too. The Axy ones are a lot cheaper than the Carroll and I have no idea what they are like but I would think they would do the job you want at not too many beer tokens.
The sheet abrasive is a lot cheaper than the ready made drums too.