| 摘要 |
A ratchet wrench includes a ratchet wheel received in the bore of a head and having a number of teeth, and having an engaging hole for receiving a socket adapter. A pawl may control the ratchet wheel to be driven by the head. The socket adapter includes a shell engaged in the ratchet wheel, and a shank extended from the shell for engaging with a tool member. Two balls are engaged in the shell and the shank. A shaft is slidably engaged in the shell and the shank for selectively actuating the balls to engage with the lower portion of the ratchet wheel and the tool member simultaneously.
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