This patented auto dolly system is a portable jack stand that will free up your work bay, overhead hydraulic lifts and floor jacks. An affordable and cost effective piece of automotive equipment that will increase productivity and is a lot safer to use than floor jacks. Its 6" swivel casters with ball & roller bearings allow a disassembled drive train, chassis or body to be placed anywhere in the shop while waiting for parts. With the vehicle tires on or off, it adapts to most model and year cars. Adjustable from 12.5" to 15.5" in height and 30" to 60" in width. An alternative to GOJAK, Kingsbury Auto Shop Dollies, and Mighty Mover. The UNI-DOLLY is a tool the auto industry and your shop should not be without. Same as Ford part number 209-00089 While Supplies last