Woodcraft Wagon beds are made with extra fine hardwood. The 2-1/2" wood sides on the beds are held together with full length 1/4" tie-rod for longer lasting years of service. Heavy duty 14 gal. steel brackets are used to hold the 1/2" x 1-1/2" side rack post. Bottom is a polywood that is sustainable and built to last. Brass bushings on steering are used for no-rattling and true steering. Heavy duty welded running gear with safety auto steering. Built for 1000 lb. loads. Bed Size 22" x 40" Tires 4.10×4 air