Thank you for viewing! This is a set of urethane inserts designed to fit inside the 100-yen store's "Shikiri Case Middle" and hold up to four 20-meter or 21-meter class model train cars. Originally, I developed this for my own use because it was a hassle to take out and put away my paper box train sets, N-gauge converted Tetsudo Collection models, and individually purchased items. However, it was so convenient that I started selling it. Production is handled by a processing manufacturer in Japan, and the quality is comparable to manufacturer-made products. To reduce costs, I order in bulk, so there are no supply issues despite being a private seller. Removing the center urethane allows for 20-meter class cars. Removing the urethane at both ends allows for 21-meter class cars. The bottommost urethane in the storage area can also be used as a parts compartment. *Important Notes* * Each vehicle is for reference only and is not included. * Since I haven't tested with all vehicles, please understand that returns and claims are not accepted. * Vehicles with high pantographs, such as the 883 series Sonic, cannot be stored. * As it is a new product, there will be a chemical odor for about two weeks after opening. * Please prepare the case yourself. To keep the price down, the price is based on the Yu-Packet Post shipping cost. Therefore, I may not be able to accommodate requests for combined transactions. Thank you for your understanding. Please experience the convenience of storage for yourself. You'll be freed from the tedious tasks of opening paper cases and plastic cases when you want to run your trains, and you'll feel like you have more time to run your vehicles. Nshell (Set of 2) Urethane Inserts for 20-21M Class N-Gauge *Please be aware of high-priced resales on Amazon. Please do not purchase from them.*