This is a rail set for creating a circular layout with Capsule Plarail. It is designed and colored to resemble real rails. Of course, it can also be connected to regular Capsule Plarail rails. This set includes many rails that are longer than the standard Capsule Plarail rails, providing more stable running. *The rail running surface is on one side only. The back side has a flat structure. *This product is a personally made 3D-printed part. Please be aware that there may be stripe patterns, color differences, and surface roughness due to manufacturing. *The material used is PLA, a plant-based plastic. Please be careful as it is prone to deformation in high temperatures. Thank you for viewing.