This is a vintage Selmer Scroll Shank mouthpiece for the Alto sax in an original F facing. These vintage long shank alto pieces are very underrated. They are great players, and this original F is a great example of that. It has a sound very remeniscent of Kenny Garrett. With the larger tip opening it can take as much as you can push as well. A great example of a classic Selmer Long Scroll Shank mouthpiece.