With it， you can practice saxophone whenever you want to because it allows you to practice without disturbing people.Features:Made of good aluminum.Designed for soprano saxophone.Easy to install.Practice without disturbing people.Specifications:Material: AluminumProduct size: 5 * 5 * 3.5cm / 2 * 2 * 1.4inPackage size: 19 * 12.5 * 3.5cm / 7.5 * 4.9 * 1.4inPackage weight: 9g / 0.3ozPackage List:1 * Mute