Gravitrax Expansion Hammer Smart features

Smart features

Each position can be achieved by rotating the central wheel

This amazing book allows you to Scratch and Sketch detailed otherworldly designs that dazzle with color

Angry Putty™ features a unique formula that builds resistance as you play

33-inches by 2 inches

Gravitrax Expansion Hammer Smart featuresNail your marble with the GraviTrax Hammer and propel fun to the next level! Propel the marble through your run by adding the Hammer. When triggered, the hammer swings down and hits the marble, giving it momentum to send it on its way. This accessory also includes 6 additional tracks. GraviTrax Starter Set required What makes a great toy? GraviTrax checks all the boxes! Its a creative, modular, expandable track system that challenges children to use