I purchased a set of 5 colors, but I only used the pink one. The remaining four, as shown in the photo, have been stored in the original bag since I bought them. They are about 10 years old, so I tested them just in case. The yellow ink doesn't flow well, and the fine tip doesn't write at all. The other colors wrote, but I'm not sure how much longer they will last, so please purchase only if you understand this. Also, please understand that these have been stored at home for a long time.