This is a hard rubber version of the Ponzol M1 tenor saxophone mouthpiece. It has high baffle, metal mouthpiece proportions. If you like the streamlined proportions of metal and easy on the teeth compliance of hard rubber, this this may be your piece. It has straight sidewalls, small chamber, and a high stepped baffle. Tip opening measures 0.115″. The high baffle does not disappoint with projection and brightness, but it is also surprisingly easy to lay back and get a slightly darker tone. It would be a nice all around mouthpiece in the right setting, like a combo with electric guitar for example, where you want a cool tone with the option to cut through when needed. If you’ve been playing a Berg and want something slightly brighter, this would do the trick.