| 摘要 |
A ratchet wrench includes a head having a chamber to rotatably receive a follower, and a peripheral bulge extended into the chamber, to form an annular channel between the follower and the head. The follower includes six sides each having a recess to form six pairs of curved actuating surfaces, a cap is rotatably secured to the head and includes three or more actuator fingers to form three spaces between the actuator fingers and to receive rollers. The curved actuating surfaces of the follower are arranged to allow the rollers to be solidly engaged between the follower and the peripheral bulge of head.
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