This is a WC Sumner Acousticut Tenor 3 mouthpiece. It has a .080 tip opening, straight side walls, a slight rollover baffle, and a medium sized oval chamber. There are a few scratches here and there but other than this it is in pretty good condition. This is a good piece with a good facing for a low price. If you need a nice piece to play in this price range, this is hard to beat.