The hard shell simulate the functional positions of hand and the hollow hard body can be opened. The fastener and the arm lifting ring are fixed on the hard shell.

硬壳为模拟手功能位、能打开的中空硬体，紧固件和吊臂带环固定在硬壳上。

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The dog chain, the movable end of which is connected with a dog ring by a fastener is connected with the line wheel by a line wheel casing mouth and wound.

活动端用扣具与狗项圈相连的狗链通过线轮壳口与线轮相连并卷绕起来；

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