Zendex states that their GoJAK 4500 Super Slick unit can lift vehicles weighing up to 4,500 lbs. with a patented, self-loading dolly. Additional features include:
Tire contact only, so no floor jack is required.
The ability to lift tires up to 20" wide and 38" tall.
An extra 2" of ground clearance, which is an upgrade from the original design.