Mike Williams - TrumpetMike Williams Signature Trumpet TopInner Diameter: 0. 642Outer Diameter: 1. 069Cup: Shallow Modified VBore: 27Backbore: Mike prefers the TJ backbore (sold separately) "I have played Warburton Mouthpieces exclusively since 1984. They have provided me with all of the comfort that I have ever needed to accomplish my tasks! This mouthpiece allows me to produce a full, brilliant and vibrant sound in all registers with the precision I need, especially for
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