These are reeds optimized by Mr. Masayuki Kuroda of Reed Meister. 1. The optimization has been done on the 3rd reed of the set of 3, so it has been taken out of the bag. Also, the size is handwritten on it, as shown in the second photo. 2. One reed of size 2.5 is unopened. Please purchase only if you agree with the above explanation. ※ Unused.