3M™ flange adapter holds together a minimum of seven 6 in radial bristle discs for use on bench motors with a shaft size of 1 in Dia. For bench motors with shafts smaller than 1 in, a 3M™ telescoping wheel flange adapter (PN 5) can be inserted into the center hole to fit 1/2 in, 5/8 in, 3/4 in or 7/8 in shafts. When a greater thickness of bristle discs is needed, 3M™ spindle extender adapters (PN 30134) can be added to increase the disc capacity of the flange adapter. These additional adapters are sold separately.