| 摘要 |
The present invention refers to wrenches for handling nuts and the like, which comprise a predetermined mouth located between two jaws fixed with a mobile attachment, this latter element being useful for modifying the opening of the mouth in order to be simultaneously used over two opposite surfaces in 6 or more dimensions of said nuts. A single wrench is equivalent at least to 3 wrenches with fixed mouth or more wrenches with different dimensions. The basic design of the wrench should be regarded as an illustrative but not limitative example of the present invention as it is presented in the following English system and millimetric system measures: 1/4", 3/8", 1/2", 5/8", 3/4" and 7/8" and 7 mm, 10 mm, 17 mm, 20 mm and 23 mm respectively.
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