New-Stone-Lined Mute ST-250 for French Horn, Mannie Klein Practise Mute

New-Stone-Lined Mute ST-250 for French Horn, Mannie Klein Practise Mute The ST-250 from New-Stone-Lined is the main Practice Mute model for the french horn. Despite with the increase in resistance this mute enables free and easy blowing. Musicians are now able to practice in a hotel room, warm up before a gig without disturbing anyone. This practice mute is compatible for all french horns.