Feel the need for speed? Get the “GraviTrax Speed Starter-Set” and watch your marbles soar! Trick out your track and race your marbles to the finish faster with the “GraviTrax Speed Starter-Set”! This cool construction set includes all the components of the “GraviTrax Starter-Set” plus an additional Magnetic Cannon, Flip, Loop, Spiral, Tunnels and more. Set up’s a snap with included plans while encouraging creativity and independent play. Once the basics are mastered, simply add more accessories for endless possibilities to experience the power of gravity and educational fun today! An electronic-free, expandable construction set, GraviTrax uses STEM-friendly concepts as young engineers develop critical thinking and problem-solving skills, and have a blast building amazing marble runs! Comes complete with instructions, construction plans booklet and 185 pieces: 7 metal marbles, 6 rugged 12” x 12” card bases, 2 large/2 small transparent levels, 56 large/12 small height tiles, 28 curves, 4 junctions, 2 switches, 1 3-in-1 tile, 1 vortex, 1 launcher, 18 tracks (3 long, 6 medium, 9 short), 4 extra-long tracks (2 speed, 2 slow), 10 Bernoulli tracks (2 long, 8 short), 2 drop o-tracks and catchers, 2 Magnetic Cannons, 2 Spirals, 1 Loop, 1 Flip, 4 Tunnels, 1 finish line, 4 basic tiles and inserts (2 catchers, 1 freefall, 1 splash, 1 landing).