Yamaha's Sterling Silver 925 Series Mouthpieces are the first in the world to be manufactured from pure sterling silver and deliver a dark, strong sound with outstanding projection. The tone core is rich and warm yet has sufficient sparkle for clarity and life. Trumpet Mouthpiece Specifications Model Rim Cup Depth Throat Backbore Playing Charateristics Inner Diameter Contour Thickness YAC TR7A4-ST 16 mm semi-flat thick shallow 3.65 mm narrow Relatively small inner rim diameter, but still flexible. Perfect for piccolo or lead trumpet. YAC TR11B4-ST 16.4 mm semi-flat standard semi-shallow 3.65 mm medium A somewhat shallow cup and medium rim for extra endurance. Brilliant tone. Suitable for D, Eb, and piccolo trumpets. YAC TR14A4a-ST 16.7 mm semi-flat semi-thick shallow 3.65 mm semi wide Fast-response high range and powerful sound. Ideal for piccolo or lead trumpet. YAC TR14B4-ST 16.7 mm semi-flat standard shallow 3.65 mm semi wide Relatively large rim diameter and shallow cup. Outstanding overall balance for all musical genres. YAC TR16C4-ST 17 mm semi-flat standard standard 3.65 mm standard Large rim and medium cup for easy playability over a wide range. High volume. Excellent for symphony orchestra players.

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