Marble Parkour Marble Run Calming Motion Hornet also includes two sets

Hornet also includes two sets of bearing spacers

Noah has two interlocking rings

2 Collision theory

5 wooden sticks

Image 15mm across

Marble Parkour Marble Run Calming Motion Hornet also includes two setsPresenting ROKR marble run, a perfectly designed DIY kit of a perpetual marble run. This education, hands on model helps people understand the principles of mechanics through the self assembly of motion models. The coolest 3D puzzle out there Alone, with friends or with family, ROKR Marble run is the perfect gift to spend some quality time with the people you love the most. Get this 236 puzzle kit for a full day of fun. Recommended Age: 14+ Wood