Denis Wick Straight Mute for Tenor Bass Trombone DW5505 *I am not knowledgeable about this, but the model number is likely DW5505. If you are interested, please confirm for yourself and purchase with your understanding. _(._.)_ Small dents and scratches are present. Please check the photos. *I am not knowledgeable about this, so I cannot guarantee functionality. Please understand and accept the item as it is. Denis Wick straight mute. Developed by Denis Wick, a trombone virtuoso who was active in the Philip Jones Brass Ensemble and others. Made of aluminum. 01100215+1100130038480