"Griego Mouthpieces David Taylor 0 Bass Trombone, Mouthpiece for Bass Trombone, Inner cup diameter: 29.21 mm (1.150""), Outer diameter: 40.72 mm (1.603""), Bore: Ø 8.02 mm (0.316""), Balanced tonality and pressure over the whole register, Very fast...
Thomann Italia