A truly mesmerizing marble-track experience!The paths cut out of each track widen almost imperceptibly from one end to the other, creating an invisible slope that propels the marbles forward.Watching them go is like magic in slow-mo!Meanwhile, a swirling funnel, a rubber-band bouncer, a staircase, an alternating switch, and a zig-zag track add the perfect bursts of excitement to keep the fascination rolling.Get creative and discover the wonders of engineering with the Trestle Tracks Deluxe Set! A unique modular marble run with marbles that roll slowly and smoothly The paths cut out of each track widen gradually to propel the marbles forward Great for ages 8 and up; Follow the included templates or build your own marble run design Encourages spatial reasoning, creativity, engineering skills, problem-solving, critical thinking 124-piece Deluxe set includes 2 catchers, 2 toppers, 90 risers, 10 stainless steel marbles, 18 tracks, 2 base grids
