Features: Made of good quality aluminium alloy,strong and durable. The mute can effectively reduce the volumeand allow you to practice without distrubing others. Perfect mute for music lovers, especially designedfor trombone. It would not effect the tone but give the trombone a mellow sound. Lightweight and portable, it is easy to use and carry. Specifications: Condition: 100% Brand New Material: Aluminium Alloy Weight: Approx. 148g / 5.2oz Size(H x W): Approx. 24.5 x 12cm / 9.6 x4.7in Color: Sliver Package list: 1 x Trombone Mute Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.