All-Welded, Lightweight, extruded Aluminum Frame provides durability * Foot pedal release easily converts from a 2-wheel hand truck to a 4-wheel platform truck in seconds * Lightweight, bolt-on cast aluminum shoe with built-in fender - load capacity up to 600 lbs * Available in two sizes to meet all of your load handling needs -- Jr. & Sr. models available * 10" fully pneumatic tires