Yamaha Trombone Mouthpiece 47

Yamaha Model 47. Smaller inner rim diameter than the 48. Outstanding endurance. Rich tone. Similar to a Bach 6-3/4C or a Schilke 47. Inner Diameter = 24.98mm. Contour = standard. Thickness = standard. Cut Depth = standard. Throat = 5.85mm. Backbone = semi-narrow.