Introducing a new accessory of incredible size! Transform your wah-wah mute into a silencer! Can be attached to almost all wah-wahs. Simply attach the "Warm-up nano" to your favorite wah-wah mute (cool jazz style*) and a new silencer will be born. You can practice silently at any time, with the same pitch, intonation, blowing feel, and sound as you are used to using a mute. (Sound-reducing performance varies depending on the mute installed.) *Cool Jazz Style is a style of playing wah-wah mutes without the stems. It is derived from Best Brass' Cool Jazz Mute. Also great for buzzing practice! The Warm-up nano is compatible with TP, Cr, and Fh shanks and can accommodate trumpet, cornet, and flugelhorn mouthpieces. The Warm-up nano creates just the right amount of resistance, resulting in a much more natural lip vibration than buzzing with just the mouthpiece. The included strap allows you to easily attach it to your bag or instrument case, so you can warm up anytime, anywhere. It's also recommended as an accessory! An accent for your brass life. Simply attach "Warm-up nano" to your favorite instrument and a new wind instrument accessory will be born. Let's casually show off your musical instrument lifestyle in various situations in your life. It's sure to be fun, and makes a great gift. *Depending on the shape of the mute, it may not be usable. *The image is for illustrative purposes only. Wah-wah mute and mouthpiece are not included.