Accepts and supports 3M™ Roloc™ Bristle Discs for smoother collision repair workShank easily attaches to a range of drills and air tools with 1/4-20 EXT threadsHard rubber pad provides support for Roloc™ Bristle Discs, improving finishesAssembly accepts Roloc™ Bristle Discs for fast, easy disc changeoutsRoloc™ attachment allows operators to switch discs in seconds for greater productivity