The nozzle diameter is 27.8cm, which is suitable for most tenor saxophones. The exterior is lacquered and made of brass. Professional leather cushions and springs have strong air-tightness and are free to retract. Natural cork is waterproof and moisture-proof, sound insulation and heat insulation are not easy to deform. , Which effectively reduces the loss of breath, makes the sound more coherent, and the tone is more transparent.