These are compact slope piers, smaller than Plarail's mini bridge piers or sloped curved rails. They are very simple and do not protrude from the width of the rails. They can be used with double-track rails, making it easy to create elevated lines, three-dimensional double-track layouts, figure-eight layouts, and more. Slopes can be created on both curves and straight sections. As a bonus, two compact elevated bridge piers with the height of the genuine Plarail piers are included. A video about this product is available on Youtube, please refer to it. https://www.youtube.com/shorts/GSdDRla7hBs Set Contents: Compact Slope Pier (Low) x 4 Compact Slope Pier (Medium) x 4 Compact Slope Pier (High) x 4 Compact Elevated Pier x 2 *This product is a personally made 3D-printed part. Please be aware that there may be stripe patterns, color variations, and surface roughness due to manufacturing. *The material used is PLA, a plant-based plastic. It is prone to deformation at high temperatures, so avoid direct sunlight and high-temperature locations such as inside a car. Color changes are also available. Please contact us via transaction message.