The new unit is mainly made up of adjusting base, leading screw, diagonal rack and specialspanner.
该装置主要由调整座、丝杠、斜齿条和专用扳手组成。
2
With specialspanner according to instruction and requirement to roll operational key 90 degree, so that can achieve to open and close.
用专用扳手按指示要求转动操作键90度即可实现开关。
3
Convenience : The water chestnut of the screw can fit exactly into this special desighed spanner, which avoids the problem of slipping out as using the normal jack handles.