Our Name Train is a fun way to help any boy or girl learn to spell their name! The engine and caboose are 3 1/2 inches W x 4 inches L, each letter 4 inches H. Magnet couplers are included in kits. Parts and precut kits contain the engine and caboose only. Each letter kit includes 1 pre cut letter, 1 car, wheels and hardware. The plan includes all cars and alphabet letters.