Heavy‑Duty Tire Skate Jack for Car Truck RV Trailer, Hydraulic Car Dolly Set of 2, 3000 LBS Vehicle Positioning Wheel Dolly with. Robust Steel Construction: Crafted from high-quality steel, the powder-coated finish protects against rust, with each car dolly capable of supporting up to 1,500 LB, a combined total of 3,000 LB for a set of 2.