The discovery kids suspension marble run kit has 113 pieces to create a twisting, turning and looping marble coaster. Kids will learn the basics of physics and engineering as they watch the marble tumble down from the force of gravity and take loops without falling off the track. Set includes - 4 upper legs, 4 lower legs, 4 foot pieces, 6 vertical risers, 6 vertical connector, 6 arm, 6 track support, 6 straight track, 13 curved track Also includes - 18 track coupler, 1 ball launch ramp, 1 suspension cable anchor, 1 top knob, 1 track end piece, 8 cord hook, 8 cord tensioner, 8 cord, 8 balls Suitable for ages 8 to 11 years Check out my other New in unopened box toys! Many available at 50-75% off retail. Great for Christmas 🎄