Wall Coaster Crazy Stairs are a great addition to either of the Wall Coaster marble run sets. Marbles drop onto the Crazy Stairs and click-clack down to the next section of coaster track or stunt. Just be careful of the angle - too steep and the marbles will fly off onto the floor, too shallow and the marbles will stall and make a marble traffic jam! You can even link multiple sets of Crazy Stairs to make a long staircase. Like all Wall Coaster components, Crazy Stairs attach to the wall with poster tac. Set includes Crazy Stairs, 2 marbles and 1 length coaster track. Ages 5 and up. Imported.