Using the most advanced computer controlled machines in the industry, Backun Musical has created an Eb barrel that allows you to use your traditional Bb reed without cutting it down to fit your mouthpiece. No more custom reeds. No more hassles. By extending the table of your Eb mouthpiece onto the barrel, you can now use your favorite Bb reed during the entire performance. Doublers and Eb players unite… Now you have a reason to practice the Eb!