The Wilcox Container Dolly is designed to carry ULD 1, 2 and 3 with a 3,500-lb load capacity. It comes with patented 4-wheel steering, with exclusive precision tracking. The dolly has a powder coated steel structural frame with 34 casters for ultimate strength. The Wilcox Container Dolly comes standard with solid natural rubber tires and a tow-bar actuated parking break.