Yamaha's Standard Series mouthpieces are produced with the most advanced computer design and manufacturing technology. These mouthpieces are crafted for unmatched precision, smooth attack, secure control, and easy playability. They have an ideal weight for all-around use and are available in a variety of configurations to suit every player. Trombone Mouthpiece (Small Shank) Model Rim Cup Depth Throat Backbore Playing Charateristics Inner Diameter Contour Thickness 45A24.26standardstandardshallow5.85semi-narrowSmall inner rim diameter with an extremely shallow cup for brilliant tone. Easy high notes. 45C224.26semi-roundstandard standard5.85semi-narrow Small inner rim diameter with a clean bite. Easy playability with a bright tone. 46B24.58standardstandardsemi-shallow5.85semi-narrowShallower cup than the 46C2. Outstanding high register. Fairly sharp shoulder. Brilliant tone. 46C224.59semi-roundstandardstandard5.85semi-narrow Relatively large inner rim diameter. A good choice for advanced jazz players. 4724.98standardstandard standard5.85semi-narrowSmaller inner rim diameter than the 48. Outstanding endurance. Rich tone suitable for ensembles and orchestras. 48A25.25standardstandard shallow5.32semi-narrow The 48 rim combined with a very shallow cup. For alto trombones. Bright tone with good volume. 4825.25standardmediummedium6.62semi-wideWell-balance rim and cup for all-around playing. Refined design...

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