Build an exciting marble racing game for up to four players. Fully compatible with Galt Marble Run, this exciting construction set features three special racing pieces. A variety of chutes and wheels are also included for a really fascinating race.Starter top, starter base, finish, 3 racing vortex, wiggly bell chute, staircase, staircase support, curved chute with horizontal wheel, vertical wheel chute, paddle wheel, S shaped chute, 4 straight chutes, 37 tubes, 4 bases and 20 marbles. Age: 4 to adult.