Here is the rail set prepared for Rest-sama's order. Set Contents: Double-track crossing rail x 1 45-degree crossing rail x 1 Adjustable length rail (52mm-84mm) x 1 Male-male joint parts x 4 The crossing rails have female joints, so please combine them with the included male-male joints as needed. The adjustable length rail is designed to come apart if stretched too far. Simply reattach it to use. ※ 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 manufacturing. ※ The material used is PLA, a plant-based plastic. Please be careful as it is prone to deformation in high temperatures.