uxcell Power Drill Drive Nut 1/4" Hex Shank to 1/2" Socket Adapter Set 3 Pcs Product Name : Socket Adapter;Material : Chrome Vanadium Steel Hex Socket Size : 13mm / 1/2";Hex Shank Size : 6.2mm/ 1/4" Overall Size : 13 x 52mm/ 0.5" x 2" (D*L);Color : Gray Weight : 99g Package : 3 x Socket Adapter