6pc Drill Accessory Set - Extension Bars, HEX Flex, Quick Change Holder, Magnetic Screw Holder 6pc drill and power tool accessory set - Turn your power drill or impact driver into versatile high-speed nut driver Includes all the pieces you need to drive or remove screws, nuts and bolts in any position: Drive power extension bars, drive HEX, quick change holder, magnetic screw holder Drive power extension bars included: 1/4", 3/8", 1/2", 6" x 1/4" drive HEX flex extension bar 1/4" hex shaft fits all quick-change adapters & extensions, drill chucks Spring-loaded tension ball keeps sockets in place