Training track toys

Features: 100% brand new and high quality ★New anti-stress toys, different from other anti-stress toys ★ A set includes a controller and four small steel balls. ★By changing the track repeatedly, the ball can run continuously on the track. ★One steel ball is the simplest, four is the most difficult. challenge! ★Through playing, you can train your attention, coordination and reaction speed. ★ Both adults and children like to play it, reduce stress and relax. Please note: This toy is not suitable