Featuring the Milwaukee® ECX™ bits and hardened tips, the 11 In. 1 screwdriver replacement bit set is a great solution for professionals when their bits wear out in their multi-tip screwdrivers. The bit set is a less expensive option for end users than buying a new screwdriver and is compatible with the most popular multi-tip drivers on the market. The Milwaukee ECX™ bit prevents bit wear from hardened screws and extends bit life when fastening specialty screws found in electrical boxes, conduit couplers, outlets, and other common job site fixtures. The integrated gut hook and wire stripper also increase utility.