Griego MPC's LB45-NY-SP New York 4.5 Tenor Trombone Mouthpiece (large shank) . Griego

The 4.5 mouthpiece has a slightly flatter rim than the model 5. The cup diameter is a slightly bigger than the model 5. This wider cup diameter can help players that need more room within the cup to place their embouchure. This mouthpiece is a free blowing mouthpiece, and is great for playing second in the symphony (or principal if playing with a large orchestra).