| 摘要 |
A tool assembly includes a body having one or more driving tool bits and one or more engaging holes formed in one end for driving fastening members, and having an engaging hole formed in the other end for engaging with a driving tool bit of a rod so as to extend the length of the driving arm of the body. A block is secured to the body and includes a middle portion having a slot for engaging with a chain and includes one end having a screw hole for engaging with a bolt. The bolt includes an extension for disengaging the pivot shafts from the chain so as to adjust the tightness of the chain.
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