Hercules Stands HCHA-100 Mute Holder, diameter: 1x 47.5mm; 2x 63 mm; 1x 74mm, dimensions folded: 100 x 250 mm, 5kg load capacity. The mute holder fit to virtually any microphone stands and music stands with a tube diameter of 8 - 30mm. He holds the most common damper for trumpet, cornet, trombone and French horn within reach. The rings are padded with special foam to ensure a silent drop of the damper. The accessory tray can be removed.