Yamaha Soprano Saxophone Mouthpiece 5C Thank you for viewing. Purchased last month, used less than 7 times. (Used a patch, no tooth marks) I am selling it because I purchased a metal one. Based on my experience trying it out, I compared it to a 4C and found that the sound became louder, and I could play it without any discomfort even with the same reed (blue box 2.5). Opening size: 4C 1.20mm 【5C 1.25mm】 The item has been disinfected and cleaned before listing. The items in the photos are all that is included, and it will be shipped via post. Thank you for your understanding.