Professional tool for commercial or occasional use -3pc socket adapter adaptor set -Extra long hex bits -Ball bearing fitment ensures socket is easily seated and wont just fall off -Hex shank fits all quick change chucks as well as standard drill chucks -Extra-long adapters so perfect for access into restricted hard to reach areas. -Can be used in any bit holder or even cordless / electric drill -Total length of the adapters 150mm -1/4" / 3/8" and 1/2" socket adapter ends -Manufactured from chrome vanadium steel for strength and durability