Tamiya 70100 Track and Wheel Set

This set includes four lengths of plastic track sections - two 30-link and one each of 8-link and 10-link lengths - which you can combine in different ways to make different overall lengths. Also included are two each of large and small drive sprockets, two different sizes of road wheel (large x6, small x10), and two idler wheels. Drive sprocket hex shafts are also included. This set is compatible with other Educational Construction series products like 3-speed and twin motor gearbox products.