| 摘要 |
PURPOSE: A ratchet wrench is provided to combine firmly a bolt and a nut buried in an area too cramped to manipulate or out of reach. CONSTITUTION: A ratchet wrench device comprises:a ratchet wrench rotatably attached to a front end unit(1a) of a manipulating rod(1) through a shaft(5); and a handle(2) installed in the other end unit(1b) of the manipulating rod. The ratchet wrench rotating around the shaft contains:a rear end unit(3b) installed in the shaft; and a front end unit(3a) containing a ratchet(7).
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