| 摘要 |
A wrench has a handle integral with a ratchet head that defines a chamber having a generally circular sidewall. An annular rotor has radial teeth about an outer surface thereof and is located in the chamber. The rotor teeth engage a single set of teeth extending radially inward from the chamber sidewall. Preferably, the sidewall teeth will be configured to have substantially equal height. Additionally, the two sides of each sidewall tooth that engage the rotor teeth will be configured to be substantially parallel.
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