KELLY TB12CR 12C Crystal Red Trombone Mouthpiece QSC GX Series use a two-way switch (push-pull

use a two-way switch (push-pull or mini-toggle)

power indicator LED

whether playing in unison

Provides for fast

KELLY TB12CR 12C Crystal Red Trombone Mouthpiece QSC GX Series use a two-way switch (push-pullKELLY 12C Crystal Red Trombone Mouthpiece One of our best sellers here at Alto Music, the KELLY Trombone Mouthpieces are made entirely of lexan material. Kelly mouthpieces are designed to make playing brass instruments easier. The terrors of braces, college and professionals facing inclement weather marching, or during the holiday season, well worry no moor!!! Kelly mouthpieces were designed to meet the demands of brass players from beginners to