KLEIN TOOLS 646-5/16 Nut Driver 5/16 in Handgrip, Hollow-Shank

3/8 inch hollow shaft nut driver with 6 inch shank. Reaches into deep recesses. Fits over extra-long bolts and studs. Full hollow shafts facilitate work on stacked circuit boards or other long bolt applications. Internal flanges provide solid, twist-resistant shaft anchor. Premium chrome plated for smooth feel and corrosion resistance. Meets or exceeds applicable ASME / ANSI specifications. Handle end is also color coded for easy identification. Cushion-Grip handle allows for greater torque and comfort. Tip-Ident® quickly identifies nut driver and size.