OTC's 1,500 lb. Truck Dual Wheel Dolly features a built in jack that provides almost 6-1/2 inches of lift and a jackscrew that tilts wheel assemblies up to 7 degrees to prevent damage to wheel seals Removes, transports, and installs heavy dual wheel and tire assemblies without strain or struggle, saving you time and effort, while practically eliminating the chance of back injuries 3 swivel casters (3 inch rear, 3-1/2 inch front) ensure easy manuevering of the loaded or unloaded dolly into the exact position needed for use Occupies 42 inches x 43 inches of floor space; includes a 6 foot long chain to securely hold loads in place Backed by OTC's Lifetime Marathon Warranty