Contains 12 small red, blue, green, yellow, and clear pieces. Comes with 11 straight pieces, 4 curved pieces, 2 s shaped pieces, 3 pieces for the small gear, and 2 pieces for the big gear. It also contains 2 big gears, 3 smaller ones, 1 funnel, 2 different end points, and the other parts included in the first image. Note that this set is used. The clear pieces have a slightly yellow tint, and show some signs of damage. Additionally, part of the blue piece connecting to the red container is broken, but it can still connect. The set also contains 6 marbles. Note that the marbles are slightly different sizes, so some are more likely to get stuck at certain parts of the marble run than others.