Tuba Mouthpiece tuba mouthpiece LASKEY 28G Engraved Edition The following is quoted: 28 Series (products starting with 28) This series is designed with compactness in mind. It's easy to control and has the advantage of reducing air consumption. Getting used to the amount of resonance and ease of playing in the low register requires some adjustment compared to mouthpieces with larger rims. Rim Inner Diameter: 32.51mm Throat Diameter: 8.02mm G Type (model name ends with G) For B♭ and C Tubas (also used on E♭ tuba) This type is based on the mouthpiece of Fred Geib, who was active in New York, and is also called the Geib style. It has a similar structure to the H type, but the difference is that the cup bottom is slightly rounded, providing a slight resistance. It has a versatile design that works well with various instruments, and it allows for a variety of sounds.