| 摘要 |
PURPOSE: The double ring tire operation support apparatus for the sandy road or the muddy path. According to use, the connection part interlinking spike member is built-in. CONSTITUTION: The double ring tire operation support apparatus for the sandy road or the muddy path. The spike member(100), and the connecting member(200) and locking device(300) is included. Spike member comprises interposer and adhesive plate. Interposer has the trapezoidal shape in order to enter to the intervening space of the double ring tire.
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