With a 6-Inch shaft, the Klein Tools 5/16-Inch Keystone-Tip Screwdriver features quality tempered steel, carefully heat-treated for ideal durability. An insulated, cushion-grip handle and integral flanges on the inside provide a solid, twist-resistant blade anchor that allows for optimal torque and comfort while offering protection against electric shock.PRODUCT FEATURES:- Built to handle the tough jobs with ease - Hex bolster reinforces shank for hard use and allows wrench assisted turning - Cushion-Grip handle for greater torque and comfort - Premium chrome-plated for smooth feel and corrosion resistance - Internal flanges inside handle provide solid, twist-resistant blade anchor - Special heat-treated shafts - Precision-machined tip for exact fit - Meets or exceeds applicable ASME / ANSI specifications - Tip-Ident quickly identifies the screwdriver type and tip orientation