Come to my 10mfan website and read about my new “Octagon Series” 3-D mouthpieces. I have one for alto, and one for tenor and many more models will be made. These are hand finished by Brian Powell and Erik Greiffenhagen, and they are incredibly unique designs with a revolutionary and proprietary octagon chamber and chamber panels. Come to 10mfan.com and read all about them and listen to the videos that are coming in!