Nut driver magnetic tip hollow shank with overall length 6-3/4'' (171 mm), shank length 3'' (76 mm) and hex size 3/8''. Weight (lbs.): .20. Hollow shaft design with rare earth magnetic tip features unobstructed pass-through, even on long bolts. Full hollow shaft facilitates work on 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.