OTC's 1/2 inch Impact Driver loosens hard-to-turn screws, bolts, or nuts that normal handtools can't. Protective handle design prevents the possibility of hitting your hand with the hammer when striking the impact driver. 1/2 inch drive bit holder features a 5/16 inch female hex for Phillips and flat screwdriver bits. Includes: 1-3/8 inches long No. 2 Phillips; 3-1/8 inches long No. 2 Phillips; 1-3/8 inches long No. 3 Phillips; 3-1/8 inches long No. 3 Phillips; 5/16 inch wide x 1-3/8 inches long slotted; 5/16 inch wide x 3-1/8 inches long slotted; 3/8 inch wide x 1-3/8 inches long slotted; 3/8 inch wide x 3-1/8 inches long slotted. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.