main feature : 

The mechanical steel jack is designed by mechanical transmission principle..It is one of the best lift tools used in repairing and supporting,etc.The lifting or lowering speed is controllable. Moreover, it overcomes the shortcoming of the common hydraulic jacks whose lowering height and speed is out of control when oil leaking.

The top-quality all steel structure makes it safe and durable. The compact design with collapsible lever offers easy operation and simple maintenance. It has two applicable supports stands.The lifting range is much higher.

Must attention :

1. Do not exceed the rated capacity. Overload is forbidden.
2. Before operation, please check the flexibility of the ratcher pawls.
3. please be sure the jack is on complete balance when operating. Do not put it on beveled, arc or uneven surfaces. The jack must be placed on hard plain grounds.
4. before lifting, please be sure the support stand (4)(3) supports the goods completely.
5. when several jacks are used at the same time, please be sure of the same lift or down. The whole operation course shoule be directed.
6. it is forbidden putting any parts of the body under the lift goods.
7. if working force is abnormal in operation, please stop working immediately to inspect all related transmit componets.
8. lubricate parts applied regularly.
9. the upper support (3) should be on bottom position when the jack is not used.

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