| 摘要 |
A selective one-way wrench includes a handle (10) and a head (11) from which the handle projects. The head defines a first space (12), a second space (13) in communication with the first space, a third space (14) in communication with the second space and an aperture (15). An annular gear (20) is rotationally positioned in the first space. A direction controller (30) is positioned in the second space. The direction controller includes two pawls (31,32) and a spring (33) installed between the pawls. A direction switch (40) is partially positioned in the third space for engaging selected one of the pawls with the annular gear. The direction switch defines a recess (44). A fastener (18) is driven into the recess of the direction switch through the aperture of the head so as to pivotally install the direction switch on the head.
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