Ravensburger GraviTrax Starter Set SPEED, Marble Run, STEM & Construction Toys - Halo The outer ring is easy

The outer ring is easy to grip for throwing and tugging

Filling: None

Country of Origin: Indonesia

Bottom valve is an integral volume control and on/off

Up to 2 times life in metal cutting

Ravensburger GraviTrax Starter Set SPEED, Marble Run, STEM & Construction Toys - Halo The outer ring is easyScience meets creativity with the GraviTrax Speed Set. This STEM toy encourages hands on play where kids lead the way. With a variety of gravity based elements, kids can create high speed, marble run race tracks. This construction set features all the components from the GraviTrax Starter Set, elements from the Bridges and Tunnels expansions, plus 4 additional accessories, including the Magnetic Cannon, Flip, Loop and Spiral. Experiment and problem