Description: Professional Accessory: Our key mute cork are specifically designed for alto saxophone curved tube, ensuring that your instrument produces a clear and pure sound.Durable Material: These saxophone corks are made from quality cork, which is durable and maintains good elastic for long term use.Noise Eliminate: Our sax corks come with a key mute feature, allowing you to practice in quiet environments without disturbing others.Easy to Use: Our musical instrument accessories are easy to install and replace, no professional assistance required.Beautiful Gift: With exquisite packaging, these alto saxophone cork piece make the gift for friends and family who love music. Specification: Material: Wood Size Chart: 6cmx4cmx2cm/2.36inchx1.57inchx0.79inch Package Includes: 10 Pieces Key Mute Corks Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on line shopping!