STEM Kit Metal Ball Race Designed for both a single player and groups of friends and even teams, Metal Ball Race lets you build exciting and fun race track models on which metal balls can race. The construction set includes three completely different, action-packed models. Once the track is built, the fun really begins! The set's attractions include wide and flexible, high-speed tracks, as well as tight curves for daring overtaking maneuvers. The colored balls allow each player to choose a color and then follow them along the fast-paced obstacle course. But be careful not to declare yourself the winner too quickly - adjustable locks can slow down or stop the balls, keeping the race exciting until the end. All three models have distinct races, with different launching devices. Assembly instructions to build 3 complex and original circuit models. Contains 697 pieces. Recommended age: +8 years. Made of plastic. According to EN71&ASTM regulations. WARNING: Not recommended for children under 3 years, contains small parts. Adult supervision is recommended during play. Read the instructions before use, follow them and keep them for reference. Made in Germany by Fischertechnik.