This is a premium 120 grit sanding belt that can be used various drum sanders as a conveyor feeding belt. While the grit is not really important, it is simply to be able to grab the material you are sanding and move it through the sander, similar to grip tape on a skateboard if you will. These drum sander conveyor belts are fantastic for replacement belts because they are much more cost effective than the typical feeder belts from the manufacturer and much more durable due to their heavy duty polyester cloth backing. A Delta 18-36 drum sander takes a 18" x 47-1/2" feed belt. We make our drum sander feed belt for this delta machine using a durable, heavy duty backing. This is also used by the Delta x5. A Jet 22-44 plus drum sander takes a 22-3/8 x 47-1/2 feed belt. We make our drum sander feed belt for this machine using a durable, heavy duty backing.