Build a mesmerizing marble run with these colorful magnetic tiles! Pieces for construction in this set include quarter round turns (24), long straight slides/supporting columns (32), magnetic square tracks (50), straight slides (12), U-turn slides (8), funnels (4), slopes (5), equilateral triangles (4), and isosceles triangles (4). This set also comes with 6 steel-weighted marbles to race! This STEM set inspires pretend play, problem solving, and logical thinking, and is compatible with other Picasso sets for even more fun. BPA-free and made with child-safe, lead-free materials.