| 摘要 |
A shank of a hand tool includes two opposite surfaces which are terminated at a rear end of the function end at each of two ends of the shank and two ridges extend from two sides of each of the two opposite surfaces of the shank. The two ridges start from the function end and end at the other function end. The ridges reinforce the structural strength of the shank and provide a larger friction between the hand of the user and the shank.
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