| 摘要 |
<p>PROBLEM TO BE SOLVED: To achieve simplification of fastening and loosing works by an impact wrench with use of a socket.SOLUTION: In an embodiment, a socket, in one end side of which an insertion angle of an impact wrench can be engaged, is equipped with a first holding part and a second holding part. A first nut having a first width can be engaged in the first holding part from the other end side with respect to the one end side of the socket, and the first holding part holds the engaged first nut. A second nut, which is provided on the one end side of the socket with respect to the first holding part and has a second width narrower than the first width, can be engaged in the second holding part, and the second holding part holds the engaged second nut.</p> |
