The Yamaha standard mouthpiece for cornet size 11E4 convinces with its typical British cornet sound. The deep bowl, as well as the large bore of 4.20 mm provide a warm and full sound. The center flat edge supports a good endurance. The inside diameter is 16.46 mm. The Yamaha 11E4 silver-plated cornet mouthpiece is suitable for beginners and professional musicians alike.