MUTE-TUBE Professional, Practice and recording muffler for trumpet and flugelhorn, Steel housing with standard high-gloss finish, Double-layer acoustic fleece/foam, Sound reduction: >25 dB, Stand is height adjustable from 90 - 145 cm (playing height: 130 - 185 cm), Tube tilt angle adjustable, Note holder can be screwed on and off, Outer tube dimensions (ø x D): 32 x 47 cm, Inner tube dimensions (ø x D): 20 x 42 cm, Diameter opening: 17 cm, Weight of tube: 7 kg, Total weight: 12 kg, Extra features inside: Two microphone jacks, inside: XLR male / XLR female (3-pin), Colour: White, Developed in Austria