Constructor GraviTrax: Extension Catapult

GraviTrax - the power of gravity! Extension Catapult pack includes: 1x Set of Instructions/ 1x Catapult Base/ 4x Gravity Spheres 2x Spare Rubber Bands.

GraviTrax allows you to design and build your own marble runs and experiment with gravity / magnetism and kinetics to propel your marble to the finish. With a variety of tiles levels,tracks and elements you can control the speed of the marble.