Compatible with: HD18PD, HD18DD, HD18DD, C18ID C18PD C18IW impact wrench 2650-20 2601-20 (B28C) 1/2 inch compact screwdriver drill 2601-20 (B28B) 1/2 inch compact screwdriver 2652-20 (B78B) 1. 8 Volt 1/2 Inch Square Impact Wrench 2651-20 (B77B) 18 Volt 3/8 Inch Square Impact Wrench 2650-20 (B55B) 18 Volt 1/4 Inch Hex Impact Wrench 2602-20 (SER C15A) M18 1/2 Inch Compact Hammer Drill HD 18 P D Combi Hammer Drill C18PD combination hammer drill HD18PP2A combination set C18ID impact wrench