LEXIVON Impact Socket Adapter Combo Kit, 7-Piece Increaser, Reducer & Extension Set | 1/4"-3/8"-1/2" Impact Driver Conversions, Active Rust Protection by Black-Phosphate Coating Treatment (LX-109)ONE COMBO KIT FOR ALL YOUR NEEDS: 7 Piece set includes square drive adapters: 1 4"(F) to 3 8"(M) 3 8"(F) to 1 4"(M) 3 8"(F) to 1 2"(M) 1 2"(F) to 3 8"(M) & 1 4" HEX to 3 square drive sizes: 1 4" Sq. 3 8" Sq. 1 2" Sq. Adapt & Convert your Impact Driver or Power Drill for any application. HEAVY DUTY Your Impact Grade Adapters are Hardened, Heat treated & precisely machined to withstand the test of time. Engineered from Chromium stirred with Molybdenum