This is a set of urethane dividers designed to hold up to 5 model train cars, 15-18 meters in length, in the "Shikiri Case Middle Shikiri Ita BK" sold at 100-yen shops. I designed this myself because I found it troublesome to take out and put away model train cars from paper boxes, N-gauge converted Tetsukore models, and clear cases. This is an original product, and production was outsourced to a domestic company. By removing the urethane in the center, you can store model train cars that are 15-16 meters in length. There are two notches on each side, and by cutting them, you can store model train cars up to 18 meters in length. ※Notes※ ・Not compatible with model train cars over 18.5 meters in length. ・Each model train car is for reference only and is not included. ・Although this is a personal sale, I regularly order urethane, so there are no supply issues. ・Since it is new, there will be a chemical odor for about two weeks after opening. ・While the cost performance is good, I recommend purchasing this product after obtaining the case. Please experience the convenience of storage for yourself. You will be freed from the troublesome tasks of opening paper cases and plastic cases, and you will feel that the time you spend running your model train cars will increase. To keep the price down, the price is based on the Yu-Packet Post shipping cost. Therefore, I may not be able to respond to requests for combined transactions. Thank you for your understanding. You are welcome to remain silent throughout the transaction, including greetings. I may also do the same. I apologize. Thank you for your consideration. Nshell (Set of 2) N-gauge Urethane Inserts for 100-yen Cases (15-18M Class Compatible) ※Please be aware of high-priced resales on Amazon. Please do not purchase them.