GreatNeck G66C 6x5/16 Inch ScrewdriverGreatNeck G66C 6x5/16 Inch Screwdriver Features:; Large tough super shock and wear resistant hi-impact clear amber handles with black fluted embossed inlay; Polished blades manufactured of chrome vanadium steel with precision ground tips; Round shank; Slotted screwdriver; 5/16" x 6"