Mute set for tenor trombone. Includes an aluminum straight mute, a Jo-Ral. It has some dents and shows considerable wear, but it should function without any problems. Also includes a New Stone Lined cup mute, a lightweight model made of fiber, which is still popular today. Both mutes show significant wear, so please purchase them with that in mind. The corks are compressed, but they still hold, so they should be fine. Both are for tenor trombones, so please use them with a tenor or tenor/bass trombone. They cannot be used with a bass trombone. They can also be used with some flugelhorns. We will ship via anonymous Takkyubin (courier service) the day after payment is received. We only sell them as a set, so thank you for your understanding.