YAMAHA-Mouthpiece Trumpet 15B4

YAMAHA-Mouthpiece Trumpet 15B4, rim inner diameter Ø 16.96, cup volume & shape: semi-shallow, rim contour: semi-flat, throat: 3.65mm, backbore: semi-narrow, fairly large rim diameter with a shallower cup than the 15C4, outstanding flexibility, suits Bb, C, D, and Eb trumpets. Produced using the most advanced computer design and manufacturing technology, our Standard Series mouthpieces feature unmatched precision, smooth attack, secure control, and easy playability. They have the ideal weight for all-around usage and are available in over 100 configurations.