Set Contents: 12 rails, 27 rail adapters, 1 adhesive pad for adapters, 7 steel balls, other miscellaneous parts, instruction manual Main Materials: Plastic, metal, etc. Price: 6599 yen "Zetsureki Slider" allows you to easily create a tall slider by attaching it to walls or windows. You can build it anywhere as long as there's a flat surface like a window or door, even if you don't have space on the floor! While playing, you can experience the principles of gravity, momentum, centrifugal force, and more. You can create courses that are tall vertically or long horizontally. You can also angle the course to make the ball move faster or jump. Depending on how you build it, you might be able to create a slider course beyond your imagination! How can you make it roll well? By repeatedly trying, you naturally repeat the PDCA cycle, and you can train your "thinking skills," "imagination," and "concentration" while playing. Let's create various courses with the "Zetsureki Slider," which can be enjoyed by children alone or by parents and children together! Used about 10 times. How about it for children who like Pythagoras Switch and marble runs? I disposed of the box, but all the accessories are included. The adhesive pad has some wrinkles and a small amount of dust. The adhesive strength is gone, so please attach it with new double-sided tape, etc. The stickers are still attached. I looked it up, and 3M's Command Strips double-sided tape seems to be a suitable replacement. (Please note that I cannot guarantee this.) It can be built anywhere on a flat wall, window, etc., but I haven't used it on walls or doors. It adheres firmly to windows. *Adhesion is weak on frosted glass. Also, since the balls are metal, I recommend using it on a place with a mat or carpet. I think it's a very good toy for training thinking skills and the ability to think. Unfortunately, I have to let it go because the environment at my house isn't suitable.