The KELLY-SCREAMER is Kelly's own lead-trumpet mouthpiece design. The rim has a cushioned feel that provides good slotting and great note accuracy! For comparison, the diameter (16mm) is near a 13a4a with the KELLY-SCREAMER being a bit shallower. The throat is slightly tighter than a Shew-lead, and the parabolic backbore just under that of a 3E. But please - try one for yourself!
Our KELLY-SCREAMER is the most COMFORTABLE, AFFORDABLE lead-trumpet mouthpiece that you'll ever play! PERIOD!