A ratchet wheel with a handle is sheathed on the core bar, and a screw can be easily screwed down or unscrewed by both hands.
在芯杆上套上一个带有扳把的棘轮，双手并用，就可以较轻松地拧紧或卸下螺丝。
On the rod body, a washer is sheathed with the part which is corresponding to the part between the tray and the screw nut of each compressing piece.
杆体上对应于每套压紧件中的托盘和螺母之间处均套装一个垫圈。
On the rod body, a washer is sheathed with the part which is corresponding to the part between the tray and the screw nut of each compressing piece.
杆体上对应于每套压紧件中的托盘和螺母之间处均套装一个垫圈。
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