This is the LS model from Aizen, a Japanese manufacturer known for its high-quality handmade mouthpieces. The opening is 7 (2.55mm). This model is based on a vintage Otto Link and is characterized by a dark and thick tone. It features a large chamber and a roll-over baffle. It's very easy to play, has good intonation, and produces a good volume. Subtones are also easy to produce, making it recommended for those who prefer a mellow performance. Purchased new in July 2024 and used for only about a week, so it's in good condition with no noticeable dirt or scratches. There are slight marks from the patch that was attached. It was very good, but I've decided to mainly use another type of mouthpiece from the same manufacturer, so I'm reluctantly selling it. Retail price: ¥36,300 #TenorSax #Mouthpiece #Aizen #OttoLink