I used to play with this a lot when my two children were 1-2 years old, but I no longer use it, so I'm selling it. ■ Set Contents Straight rail (red) x 2, S-shaped rail (light blue) x 1, Base parts (yellow) x 3, Ball receiver base x 1, Connection parts x 10 (rings x 5, U-shaped x 5), Support pillars (white) x 2 【Note】Only one ball is included. Also, there are some minor scratches on the ball and the black connection parts due to use. Please refer to photos 7-8. The parts will be placed in the outer box and shipped in a plastic bag. I would appreciate it if you could understand that this item has been used by children.