Heavy duty truck has 4mm thick reinforced steel plate for added strength. Forks can be raised from 3-1/2" to 31-1/2"H. Support legs automatically extend when the load reaches 16-1/2"H and help prevent the truck from moving. Requires 60 strokes to reach full height at maximum capacity and automatically slows the descending speed with heavier loads to help protect cargo. Rolls easily on 6" polyurethane steer wheels and 3" load rollers. Use with single faced pallets, skids and bulk containers. 2 Year Limited Warranty.