Flex shaft drill extension connect to the drill, rechargeable drill ,electric screwdriver or manual wrench, extending their reach to inaccessible stenosis , twisting screws, nuts,drills Including flexible drill bit extension and right angle drill adapter ,also can be split to use , convenient and flexible, magical infinite Matched with a screwdriver can bend , you can extend to more corners and more narrow places uninstall screws. 1/4" hex shank Quick-connect handle for all drills and wrenches , functional head with a lock and a magnetic device to ensure that the sleeve will not fall Flexible Screwdriver is a good assistant,when the car engine repair stenosis uninstall screws