The GraviTrax Pro Starter Kit is an innovative ball game for boys and girls. It's the perfect Christmas or birthday gift for smart and curious kids. Come up with your own paths or use the accompanying tasks and drawings. The GraviTrax track system can be endlessly extended with additional track packs and extras. This STEM [Science, Technology, Engineering and Math] system is perfect for teaching kids about gravity, magnetism, kinetic energy and fun. A COMPLETE BOX with all the parts needed to build spectacular and even more dizzying GraviTrax ball circuits. GraviTrax PRO elements, such as pillars, walls and balconies, create even higher circuits, for more possibilities, more challenge and more creativity! Infinitely adaptable and compatible with all GraviTrax products. With this starter set, children can immediately start playing and building circuits. Discover a wide choice of expansion sets and elements, all combinable with each other, to boost your circuits and create an unlimited number of courses. CONTENTS: 8 turns, 1 3-in-1 block, 1 tourbillon, 4 intersections, 1 starting block, 2 switches, 5 insert blocks, 1 magnetic cannon, 1 platform, 4 plates, 20 building blocks, 6 balls, 5 walls, 18 straight rails, 8 Bernoulli rails, 1 finish ladder, 12 pillars, 20 balconies, 1 guide , 1 book of assembly plans