Holton TR158 Extended Range Trombone AS ISNotes This listing is being sold as is Includes case Untested Untested, ideal as repair project. A Holton TR158 Extended Range Trombone AS IS in Non Functioning condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We always picture any and all accessories too. What you see is what you will get so please check out the pictures!