Black & Decker™ Armature Assembly is designed for type 3/type 4 27730 plate joiners, type 4 557 plate joiner kit and type 6 DW402, DW402K 4 1/2" angle grinders and DeWalt® type 6 DW402G small angle grinder and type 3 DW682K, type 4 DW682K jointer plates.