Yamaha Tuba Mouthpiece 67B4
Yamaha Tuba 67B4 Mouthpiece, Mouthpiece for Tuba, Standard Series Nr 67B4, Inner diameter 32.06 mm, Rim contour: Semi flat, Rim thickness: Semi thick, Cup depth: Semi shallow, Bore: 7.02 mm, Backbore: Standard, Finish: Silver-plated