| 摘要 |
An open end wrench is provided with a handle; and spaced first and second jaws secured to and projecting from the handle, the first jaw including a first engagement surface and a second engagement surface together arranged in an angled pair, and the second jaw including a fourth engagement surface. The second engagement surface is closer to a bottom of the first jaw than the first engagement surface. The second engagement surface extends at an angle between 2-degree and 7-degree with respect to a virtual center line passing an opening between the spaced first and second jaws. The fourth engagement surface extends at an angle between 2-degree and 5-degree with respect to the virtual center line. The second engagement surface is not parallel to the fourth engagement surface.
|
