willie's Custom Brass Willie's Trombone Mouthpiece Universal II Series for Large Tenor GP Finish (7)

A medium-heavy model created in response to the request of Peter Kellner. It fully utilizes the potential of the Thyne Universal II trombone. Normal is a medium cup, S is a shallow cup. Supervisor: Peter Kellner GP finish, rim diameter 25.10 (mm), throat diameter 7.14 (mm), similar to other companies' sizes: Buck 6-3/A