Trombone Mouthpiece Replacements Professonal Mouth Piece Portable for Trombone

High-concerned chemical : None Model Number : Trombone Mouthpiece Pisiton Material : Yellow Brass Body Material : Phosphorus & Copper Origin : Mainland China MainKey1 : Trombone Mouthpiece MainKey2 : Portable Professonal Trombone Mouthpiece MainKey3 : alto trombone mouthpiece Musical Instrument Accs MainKey4 : Alto Trombone Mouthpiece Performance Accessory MainKey5 : Baritone and Euphonium Mouthpiece Rustproof MainKey6 : Professional Mouthpiece for Most Tenor Trombones