This 33-piece Magna-Tiles Rail Racers magnetic construction set includes 28 colorful magnetic tiles, 6 patented track pieces, 4 track holders, and a rolling ball for fast, marble-run style action. This set features easy-to-assemble rails that snap together without pins or connectors, so children can quickly build ramps, bridges, and racing tracks while exploring motion and cause-and-effect. This magnetic racetrack is compatible with Classic, microMAGS, City Center, Space, and Downhill Duo sets, expanding creative play and strengthening problem-solving and hand-eye coordination. This STEM toy is made from durable, non-toxic, BPA-free MABS plastic with secure magnets for safe, frustration-free play and is age recommendation 3+.