100% wool. 3/4″ dense pile fabric on knit backing, latex coated to prevent shedding and withstand repeated washing. Fast drying and fluffs like new. Meets government specifications. Assembled with plated bolts and wing nuts. Clear lacquered block 2-3/4 inches wide. Lower block smooth tumbled 1/2″ thick. For institutional and custodial service. Does not include handle.