I am selling a Ted Klum alto saxophone mouthpiece, the Versi Tone, with a facing of 5. I tried it a couple of times after purchasing it, but it didn't suit my preferences, so I'm putting it up for sale. It feels surprisingly light and easy to play. The baffle is a roll-over type, but it's more dark than I expected, and I think it would be useful even in acoustic settings. It doesn't have a huge volume, but I think it's the perfect mouthpiece for those who prioritize control. ↓ The following is the manufacturer's comment: Composite material of resin and polysulfone resin ※ Polysulfone resin… (A material with excellent heat resistance, resistant to degradation by water and hot water, and resistant to acids, alkalis, and oils. It is also used in astronaut helmet shields.) This mouthpiece is made of safe and durable resin material and features a unique design structure from the chamber to the bore called "Clear-core." The "Clear-core" design has a continuous, gentle curve, carefully formed to maximize the resonance of the sound. The side walls inside the mouthpiece also maintain a stable sound resonance. It features a unique sound projection, power, warmth, excellent response, and easy-to-control pitch that are not found in ordinary mouthpieces. Thank you for looking.