Material: Made of soft rubber, flexible and durable, unlike metal violin practice mute, rubber violin practice mute would not scratch your violin and damage the bridge. Easy to Install & Remove: Simply install the violin mute with full size over the string of the top instrument until it is securely in place. Lower the Sound: Great for practicing and playing violin when you don't want to disturb your family or friend, it helps to reduce the volume of your violin while maintaining pitch and not interfering with your practice.<br><br>Colour:Black Material:rubber<br><br>Package Contents: 10 x Round Style Violin Mute 2 x Claw Style Violin Mute<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.