| 摘要 |
A ratchet wrench includes a handle and a wrench head unit having head body rotatably mounted on a head portion of the handle, a plurality of tubular coupling member angularly displaced from each other, and a plurality of driving heads, each coupled with the respective tubular coupling member by means of a ratchet unit. By virtue of the ratchet unit, the driving head can be selectively turned in a clockwise direction, a counterclockwise direction, or both thereof. By virtue of the driving heads, the ratchet wrench can be used to turn a variety of fasteners. |
