This is a versatile size suitable for both tenor and bass. Highly recommended for those who play both tenor and bass. This is a mouthpiece used by the principal player of a Tokyo orchestra. Here is a performance video ↓ https://www.instagram.com/reel/DNHYWe7TjlE/?igsh=ZGR5ZTJnMzA1YXhx Inner diameter 26.9mm (approximately Bach 2G) Medium Deep + It's surprisingly easy to blow, considering the inner diameter, and you'll use more breath to play higher notes, making it less tiring. Because it's deep, you can play low notes very powerfully, and it's a mouthpiece that fits well in any position within an orchestra. The weight is a custom size, and the Medium Heavy, which is not originally in the lineup, balances the instrument very well and allows it to resonate efficiently. While it allows you to project sound more easily, the wide range of tones allows for exceptionally beautiful solo performances. Retail price: 77,000 yen With box