Idler Drum Cover with Spacer for 6 x 48 Belt or Belt Disc Sanders. Made of a sturdy guage PVC Can be used as a stand alone or to Cover over your damaged original. It is designed to fit the newer style with a wider protrusion to mate with the newer Side Guards that also had a wider protrusion. It will replace the older style cover # 406-03-354-0013 but there will be a small gap on one side.