MicroMall(TM) Professional Alto Saxophone Mute Sax Sound Metal Dampener Practice , Silver and Brown Material: Metal,New and high quality This mute muffles the overtones to make a more acoustically 'pure' sound . It won't bring an out of tune sax into line The professional mute narrows the tone of the alto saxophone . Made of high quality metal, durable for long time use Height: 1.61" / 4.1cm . Diameter of Larger End: 2.80" / 7.1cm . Diameter of Larger End: 1.34" / 3.4cm Package Includes: 1 x Mute for Alto Saxophone Sax Metal Dampener