Welcome to our store!1. Made of high-quality aluminum alloy, sturdy and durable.2. The sound can effectively reduce the volume, allowing you to practice without disturbing others.3. Perfect silence for music lovers, specially designed for trombones.4. It does not affect the timbre, but makes the trombone sound softer.5. Lightweight and portable, easy to use and carry.Material: aluminum alloyWeight: approx. 148g/5.2ozDimensions (height x width): approx. 24.5 x 12 cm/9.6 x 4.7 inchesColor: silverPacking list:1 x trombone muteNotes:Please note that the old and new models of this product are shipped randomly, please make sure you don't mind before placing an order.Thank you for your understanding and support! If you find any problem with the product after receiving it, such as damage or incorrect quantity, please feel free to contact us. We will wholeheartedly provide you with the best service and ensure your satisfaction._CA