Automatic spring-loaded chine hook provides fast, one-person loading and unloading "Box frame" construction places support at the points of greatest stress Joints are form-fitted and fixed with solid welded continuously Standard frame is built of rugged 14-gauge 1.125" O.D. steel tubing 1" steel axle is encased in a protective housing for longer life and ease of replacement Heavy-duty wheels are equipped with either pneumatic or solid tires for trouble-free handling on any surface (see options below) 6" rear wheels let truck carry entire weight of load