The fluted disc on the connecting sleeve is contacted and glide with the diagonal face to form zero return stroke. The speed of tweaking screws is high.
斜面与联接套的齿盘接触可滑动，形成空回程，扭螺丝速度快。
The fluted disc on the connecting sleeve is contacted and glide with the diagonal face to form zero return stroke. The speed of tweaking screws is high.
斜面与联接套的齿盘接触可滑动，形成空回程，扭螺丝速度快。
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