This is a homemade track set for the capsule toy "Mini Motor Train." It allows you to create double-track circuits, which are difficult to achieve with the official tracks. You can also run Capsule Plarail trains on it. Product Contents: ・Double-track curved rail x 8 ・2x straight rail x 4 ・Official conversion rail x 2 Currently, I've only made basic rails for double tracks. If you have any requests, please leave them in the comments section of my YouTube video. YouTube video related to this product: https://youtu.be/bB5uALKUsV0 Because of the unique joint structure, please use the included official ⇔ original conversion rails to connect to the official Mini Motor Train rails. Since it's made with rails longer than the official ones, the trains run more stably. The outer track of the double track is designed with a 32mm larger turning radius. Based on my tests with my own train sets, there was no contact when trains passed each other. The rail running surface is on one side only. The underside has a flat structure. Because of the unique joint structure, use the included conversion rails to connect to the official rails. However, the conversion rails are not very durable, so frequent connecting and disconnecting is not recommended. ※Since the rails are one-sided, they do not support running in the reverse direction. ※This product is a personal creation made with a 3D printer. Please be aware that there may be stripe patterns, color differences, and surface roughness due to the manufacturing process. ※The material used is PLA, a plant-based plastic. It is prone to deformation in high temperatures, so prolonged exposure to direct sunlight is not recommended. Please handle with care. Thank you for viewing.