Straight mute for a J.A.R. Brass bass trombone. I purchased this about 10 years ago and used it for about a year, but it has been stored in its box since then. It shows signs of use, but there are no major scratches or dents, and it is in a condition that is perfectly usable. There is only one small dent (see image). The cork position and thickness were adjusted to fit the instrument I was using at the time, so the cork will need to be replaced and adjusted for use. For those who want to try it out or buy it used at a low price. Please give it a try. Please consider this item, understanding that it is a used item.