Best Brass Nano Warm-Up Mute

This astoundingly small Warm-up is not just a midget. It is a practice/warm-up accessory. Let me introduce how to use.

1. Insert in any Wah-Wah mutes and practice/warm-up quietly.
2. Place on any mouthpieces and do a buzzing practice/warm-up.
3. Wear it as an accessory.