Schlipf practice mute for tuba, model Nr. 0, lightweight, only about 1kg, fits for: Melton Spezial 182, Hirsbrunner F 388, 288, Cerveny Arion Bb 683 4PX + F Tuba 653, Melton Bb 186, Conn Bb Tuba 10j - 15j, Miraphone Starlight Es Tuba 383, Miraphone Bb 1272, Miraphone Bb 282, Miraphone F Tuba Petruschka 1281, Jupiter JP 482 L