Description MagnetCubes |CoasterCubes| are modular, magnetic building blocks used to make captivating marble runs and structures. With 64 cubes and various action pieces, MagnetCubes gives you freedom to build a near infinite variety of complex and impressive multi-level design miniature roller coasters and structures. This interactive track system is a unique way for individuals to learn basic physics, hone their spatial reasoning and logical planning, and develop architectural design skills. It is a fun and dynamic toy for both kids and adults. Click here to for tutorial video on how to assemble the tracks. Designer: Steven Wolfe Specification Starter Pack Advanced Pack 70%K-Resin+30%PS Cube material 70%K-Resin+30%PS PS Track material PS Stainless steel Marble material Stainless steel 4.5 x 4.5 x 4.5 cm Cube size 4.5 x 4.5 x 4.5 cm N35 d3mm, 8pcs/cube Magnet N35 d3mm, 8pcs/cube 715g Weight 902g 64x MagnetCubes 32x Clip 4x U-turn 10x Straight 10x Quarter-turn 4x Down 3x Marble Content 64x MagnetCubes 32x Panel 32x Clip 4x Down-turn 2x Loop 4x Top-hill 4x Down-extender 4x Bottom-hill 2x Magnet-launcher 2x U-turn 5x Straight 5x Quarter-turn 2x Down 6x Marble