MegaPro - Every bit better. They offer professional quality multi-bit screwdrivers to meet all your demands and in addition save time & space. A full range of replacement bits are now available - whether it's to expand the uses of your MegaPro screwdriver or because a bit has been lost, misplaced, or damaged. The 3/8" Socket Adapter is designed for use with any of MegaPro's All-in-One Screwdrivers.