Tilz T3 A This is a French horn mouthpiece. Comes with a box. Tilz T3 with an American shank. Inner diameter: 17.0mm Cup depth: deep Throat: 3.7mm American shank American shanks fit a wide range of instruments, including Yamaha, Hans Hoyer, Wenzel Meinl, Holton, and Conn. There are shank marks and minor scratches, but it is in relatively clean condition without any blackening. Please examine the photos and consider accordingly.