This is an Ergo-Grip. It was used on a bass trombone (YAMAHA YBL-822G). It has been used less than 10 times. As you can see in the third image, it's a bit difficult to see, but there was a slight fraying from the time of purchase in Shinjuku, but considering it's a foreign product, I think it's in pretty good condition. I bought it and tried using it, but it just wasn't quite right, so I'm selling it. I've discarded the outer box, so I will wrap it in bubble wrap for shipping. If it doesn't fit your instrument, you can adjust the width by pressing the part that clamps onto the instrument against a desk or wall and applying gentle pressure. (This is the method recommended by musical instrument stores. However, it's best not to change the width too often once you've set it. Since it's metal, there's a possibility of fatigue failure.) I will ship it the next day if it's a weekday. If you purchase it before 18:00 (6 PM) on a weekday, I will process the mailing on the same day if possible.