Yesterday I replaced the conveyor belt on my Performax/Jet 22-44 Plus drum sander. I ordered from Klingspor's and was quite surprised to see that the belt was not cloth backed. It is a very thin sheet of strong plastic. I seems to work well so far and is much thinner than the cloth backed belt. It is coated with white abrasive that grips similarly to the Jet and 3rd party versions.
Anyone have any experience with these belts? Opinions? Do they last as long? Should I keep a spare around?