The hook was clamped by two screw nuts on the screw, and these makes up of the retractor finally.

不锈钢丝拉钩经两个螺母夹持固定在磁力底座的螺栓上，组成简易的磁力底座拉钩；

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The hook was clamped by two screw nuts on the screw, and these makes up of the retractor finally.

不锈钢丝拉钩经两个螺母夹持固定在磁力底座的螺栓上，组成简易的磁力底座拉钩；

youdao