Be a conductor and work on those motor skills with the Building Blocks Train Set. How long is this train? It can be as small as 2 trains or hook more together to form a longer train. Set is made of 3 durable plastic 2-piece trains, and each train can be converted from a train to a car. Great activity for counting and color or shape matching. Comes in 2 assorted sets of colors - lime green, yellow, and blue trains and green, red, and purple trains.