Yamaha GP Mouthpiece Trumpet 14B4 – Thomann United States

Mouthpiece for Trumpet GP Series, Gold-plated rim, cup and bore, Inner diameter: 16.85 mm, Rim contour: Semi-flat, Cup depth: Semi-shallow, Bore: 3.65 mm, Backbore: Semi-narrow

Warburton Top Part 5 ES for Trumpet – Thomann United States

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YAMAHA-Mouthpiece H Trumpet 14B4-GP, rim inner diameter Ø 16.85, cup volume & shape: semi-shallow, rim contour: semi-flat, throat: 3.65mm, backbore

YAMAHA-Mouthpiece Heavy Trumpet 14B4-GP

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YAMAHA Trumpet Custom Mouthpiece 14B4-GP,14C4-GP,16C4-GP From Japan #391