The Switch Extension Set from Quadrilla is designed to add a new function to the Basic Set, the Twist Set, the Rail Set and the Twist and Rail Set. Fans of Quadrillas fantastic marble run sets will appreciate the extra functionality provided by this Switch Set.
The set contains eleven pieces for extending the sets listed above. The most important piece in this set is the wooden switch, which is a storage unit that holds marbles in place. When the switch is activated it releases marble onto the run and sends them on their way.
The Switch Set also contains an instruction book with guidance and ideas for using the switch.