| 摘要 |
A wrench includes a driving head for driving a fastener, and a latch slidably engaged in the driving head and movable inward of the driving head for engaging with the fastener and for preventing the head from moving relative to the fastener. A cover is secured to the head and has a passage for slidably receiving the latch. A catch may be secured to the cover and engaged with the latch for limiting the sliding movement of the latch relative to the cover and for preventing the latch from being disengaged from the cover.
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