I was looking for a cartridge keeper, but couldn't find the ideal type, so I made one myself. How about it for those who are looking for something similar? - Universal case, dark brown sheet, rubber receiver. *Please understand that this is a handmade item before bidding. The sheet pattern will vary as this is a sample product. Please refrain from bidding if you are looking for a perfect product. This is an auction for the case only. *Regarding shipping methods, there are standard mail and express delivery. Please understand that standard mail does not offer compensation for damage or loss before selecting it. If you wish, it can also be changed to a single-piece type, so please send a message after winning the bid.