• Wheel with a height of approximately 10 cm that spins like a windmill. • Requires the Gravitrax base game. • From 5 years old, the wheel easily adapts to the plates to lie flat. • Marble circuits encourage early learning by developing fine motor skills and problem-solving. • Helps in acquiring social skills through play and emotional skills for managing frustration. • Compatible with all pieces from the Gravitrax and Gravitrax Pro series, but not with the Gravitrax junior range. • Printed in PLA, a bio-based plastic.