With our full size plan, you can make this mighty train. This is a big one: the engine is 31" long, the box car and caboose are 20" long. Big enough so a child can sit on the box car. Very sturdy design for many hours of hard play. The wheels are 5-1/8" diameter and fastened with lag screws for durability. The available trim pack contains 14 wheels, hubcaps, and smokestacks. If you cut your own wheels, you will save a ton of money on this project. Remember plans are not included with trim packs. No lumber, No materials included.