Model Berlin- For Bb/C trumpet- Exciting, clear and lively sound like "The London" mute- Helps to achieve clear notes, better tuning and easier, freer playing- More volume and more open in the lower range- Louder than "The London" mute- Allows playing over the whole range without problems- Sound between copper mute and fibre mute- The design eliminates the reflection of standing waves- Especially suitable for second trumpet players, but also for general use- Material: Plastic