| 摘要 |
A composite rotary tool kit includes a plurality of coupling units and a connecting element for fastening the coupling units to form a string. Each coupling unit has a barrel type body with a housing duct located on the peripheral surface for holding a tool. The body has one side forming a stepwise slip-resisting section for coupling with the body of another coupling unit. The coupling unit has a hole in the center to enable the connecting element to run through. The slip-resisting section has a ridge mating a latch unit on the body. The coupling units may hold tools of different specifications and are turnable to facilitate retrieving of the tools.
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