Thank you for viewing. Trombone Mouthpiece Silver Plated Large Shank J. VOIGT T7 Jürgen Voigt T7 Although the detailed specifications are unknown, it gives the impression of being equivalent to a Bach 6 1/2 to 5GS. It's a simple yet highly maneuverable and reliable mouthpiece. There are some signs of use, such as shank marks, but otherwise, it's in good condition. Comes with a box. No returns or exchanges, please.