The replacement parts can be used with Makita Cordless Auto Feed Screwdrivers; BFR540, BFR550, BFR750. Makita Cordless Screw gun; BFS440. Makita screw guns; BFS441, BFS451. Makita Screwdriver; BFS45. Makita Cordless Drill driver; BHP440, BHP442, BHP446, BHP450, BHP451, BHP452, BHP456 DHP458. Makita Cordless Impact Drill BTD140. Makita Cordless Drill BTP130, BTP140. Makita Angle Grinder BDA340, BDA341. Makita Impact driver; BTD130F, BTD134, BTD146. Makita Impact Wrenches; BTW152, BTW251. Makita Electric Shears; BJS130. Makita Angle Drill; BDA350, BDA351. Supplied as a set of 2.