| 摘要 |
Varying sized thru socket attachments with a hand wrench, the wrench having a handle and a head. Each socket attachment has a neck and a receiving shoulder. The neck has an outer perimeter in the shape of a polygon which is coupled with the head of the wrench for a secure fit. A channel extends fully through the attachment through both the neck and shoulder. The size of the channel varies for the different attachment, while the diameter of the neck and the outer wall of the shoulder portion remain constant so as to properly engage the wrench. Thus, the same wrench may be employed with all attachments and used to loosen or tighten any sized nut.
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