Cornet (Eb and Bb) for sale - JetTone StudioMaster 7D mouthpiece

This is a mint Jet Tone cornet mouthpiece, model Studio Master 7D. This mouthpiece has a deep cup for the maximum cornet tone. Diameter of the mouthpiece is similar to a Bach 1-1/2C. Has only been used once (not my size) and is virtually in new condition. Shipping calculated on destination.