Contents:
1 crossing
2 ramps (each 16 cm = 6.3 inches)
2 square blocks with hole
2 square blocks (4 x 4 x 4 cm = 1.6 x 1.6 x 1.6 inches)
2 redirecting elements (8 and 12 cm = 3.15 and 4.72 inches)
6 marbles
If the old set becomes too easy for you this is the way to complicate the matter! Now you have to not just build the ball track, but also time adding the marbles to the track, unless you build it so they never meet!