Ravensburger gravitrax starter set core

Overcome the gravity! With the gravitrax bullet track system you can build your own bulleting world. Use the various building elements to make a course full of action and bring your bullets to the finish. The Gravitrax bullet track system can be endlessly adjusted and enlarged with extensions, for guaranteed boundless construction and playing pleasure! With the Gravitrax Ballbaan system you can playfully discover gravity and with various extensions it can be enlarged for boundless construction and playing pleasure! Add even more speed with the expansion sets.