Hape Quadrilla is a High Quality Wooden Marble Run Construction System. It provides QUALITY TIME for the whole family to play together. The BEST GIFT for your loved ones. It provides endless creative building possibilities and encourages spatial thinking and problem solving. Each of the seven different color blocks has a different function and it's the world's only kinetic marble run. Autobahn has won “Spiel Gut” (Good Toy) Award and Oppenheim Toy Portfolio Platinum Award. Providing over a thousand happy playing hours, Quadrilla is worth every penny. All Quadrilla marble run sets are crafted with heirloom quality birch and rubber wood for long-lasting marble racing fun. Hape Toy finishes are all non-toxic, child safe and of the highest quality. Hape constructs their toys using FSC accredited wood products. Hape toys stimulate children through every stage of development and help nurture and develop their natural abilities. All Hape products meet or exceed all applicable safety standards. This 175-piece set includes marbles, rails, and high velocity seesaws and accelerators. Autobahn is all about speed. Straight rails, high-velocity seesaws and an assortment of accelerators provide hours of constructive Quadrilla play. Quadrilla's Autobahn can be combined seamlessly with Quadrilla's other marble run sets.