Yamaha 14D4 for Trumpet

Yamaha Mouthpiece Trumpet 14D4, Mouthpiece for Trumpet, No. 14D4, Standard series, Inner diameter 16.80 mm, Rim contour: Medium-round (semi-flat), Rim thickness: Standard, Cup depth: Medium deep, Bore: 3.65 mm, Backbore: Semi-narrow, Colour: Silver-plated ...