Made by Humes & Berg Straight Mute for Trombone This is the New Stone Lined model. This is a standard type of straight mute used in a wide range of genres such as brass bands, orchestras, and jazz, characterized by its bright and clear tone. [Manufacturer] Humes & Berg [Type] Straight Mute [Compatibility] For Trombone [Condition] We have not been able to test its functionality by playing as we do not have a trombone. Also, the cork part is detached. *Please check the condition in the photos. Please only purchase if you understand that this is a used item.