Black & Decker™ O-Ring is designed for type 1 26438 7" angle grinder, type 1 27704 7" right angle grinder, type 1 27328 large angle grinder, DeWalt® type 1 DW630 7" medium angle sander, type 1 DW840 7" angle grinder, type 2 DW840 7" angle grinder and Craftsman® 900264380 grinder, 900277040 7" angle grinder.