Pull the wooden toy along with a string and watch it follow in your tracks. The rolling balls add a quirky fun. Each segment can be separated and played with individually. As many segments as you want can be added to the parade. While playing in the shop we have connected up to six feet worth of cars to make a cool super long parade. Each piece is four inches long and is made with a hardwood body and birch wheels and balls. The set contains five pieces; the front piece has a string attached for pulling. Dimensions: 4 inches each segment