This is a 4C mouthpiece (Yamaha) for alto saxophone, along with a ligature and mouthpiece cap. It has low resistance, feels easy to blow with a light breath, and I found it to be an easy-playing piece. I am selling it because I no longer use it. It was used for about 1 year and 10 months. To prevent the ligature from deforming, I will ship it with a reed inserted. No returns or claims accepted. Please purchase only if you need it.