What are the features of a spiral jack? 

A spiral jack is a common lifting device, usually used to lift heavy objects or raise the height of heavy objects. Its features and advantages include:

Stable Lifting: Due to the function of the screw principle, the jack can provide stable support during the lifting process and can also effectively maintain the lifting height

High Precision: When the user rotates the handle to control the lifting of the screw, precise height adjustments can be achieved, making it very suitable for applications that require precise positioning.
High Safety: In normal use, the jack can ensure stability and safety, reducing the risk of accidental injuries.

Economical: Compared with hydraulic jack, spiral jack is usually cheaper in price and lower in cost, making them suitable for occasions with a limited budget.

Durability: The jack is made of strong steel materials to support heavy loads and can use in demanding environments frequently.

Portable Design: Due to its light weight and small size, the jack can be easily carried and transported to different work sites.