Greenlee  4336 3.6V Driver and Socket Set AC adapter/battery charger & bit holder included Includes 14-piece socket set: 6-12 mm; 3/16"-1/2" Includes 26-piece driver bits: 3 slotted, 5 Torx, 3 Phillips, 3 Robertson, 12 hex Accepts 1/4" bits Battery life is approximately 600 cycles