ROKR Marble Squad Trapdoors Marble Run LG502 Battery Chargers 5mm thick steel frame rails

5mm thick steel frame rails increase torsional rigidity

This tabletop game is suitable for all kids over 14 years old

Advanced Mode for full manual control through EZ-Peak Live App

Electronics-Free Design

ROKR Marble Squad Trapdoors Marble Run LG502 Battery Chargers 5mm thick steel frame railsRobotime ROKR Trapdoors Marble Run set LG502 is a well designed 3D wooden puzzle toy based on great human engineering. It combines the beauty of science and machines, involving so many small gadgets. Build the set and crank the handle, watch marbles run crazy down each trapdoor, slope, and twist turns. It will bring you a super fun building & playing experience. TRACK TRAPDOORS: A handcrafted marble run set with a whole back of trapdoor track. Build