Trumpet mouthpiece - produced using the most advanced computer design and manufacturing technology. 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. Fairly deep cup with rich, mellow tone. A dark sound that is ideal for orchestra players. It has 16.8 mm rim inner diameter and 3.65 mm throat.