Screwdriver Nut Adapter Set - Sizes: 1/4", 1/2", 3/8" with Square Base Ideal for RELIABLE use for drills, screwdrivers, drill bit holders and other devices. Adapter Length: 1/4"-65mm; 3/8"-65 mm; 1/2"-73 High quality bits and robust construction made of solid chrome-vanadium steel Buy from: in case of problem n Don't hesitate to write to us High quality square socket adapters S&R socket adapters for screwdrivers Set of nut adapters for screwdrivers of 1/4" , 1/2", 3/8" square sockets Reliable. Ideal for RELIABLE use on screwdrivers, screwdrivers, bit holders and other devices. p> < p>High quality bits and robust construction made of solid chrome-vanadium steel S&R socket adapters Features Square adapter with Drive ball Hexagonal shank Standard metric dimension Ideal for adapting all sockets to screwdrivers and bit holder screwdrivers