This is a dedicated rail set commissioned by K2works. It is designed for Mini Motor Train tracks, but Capsule Plarail trains can also run on it. Product Contents: Curved Rails x 2 Straight Rails x 4 *This product is a privately-made 3D printed part. Please be aware that there may be stripes, color variations, and surface roughness due to the manufacturing process. *The material used is PLA, a plant-based plastic. It is susceptible to deformation in high temperatures, so prolonged exposure to direct sunlight is not recommended. Please handle with care.