| 摘要 |
An open ended wrench is disclosed for engaging a nut or other object when moved in one direction and disengaging from the nut or object when moved in an opposite direction. The wrench consists of a first and a second jaw mounted on a handle and an adjusting member within the wrench for moving each of the jaws towards one another when the handle is moved in one direction and for moving each of the jaws away from one another when the handle is moved in another direction. The handle is operatively associated with each of the jaws through the adjusting member.
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