The TranzSporter Wall Jacks are manufactured to easily allow for lifting of prefabricated walls into a vertical position. They are available in a 16ft. or 20ft. option and are sold in pairs (2 pack). The 16ft. option is capable of lifting walls up to 1,000 lbs. with a maximum wall height of 10ft. 6in., per jack. The 20ft. option is capable of lifting a wall up to 500 lbs. and can lift a wall with a wall height of 13ft. 6in., per jack. TranzSporter's Wall Jacks come with a lower tube and upper tube, which telescopes out, making carrying to and from job sites more easy and convenient.