This item is a violin mute which is well made of rubber for durable use and better silencing effect. It's designed to lower and soften the volume of violin so that the treble is not so sharp. Rubber has great fastness and does not easy to deformation. Easy to install on the instrument. It's really a professional violin spare accessory, great for violin player. Feature - Color: Black - Material: Rubber - Size: About1.95X1.95X0.95cm/0.77X0.77X0.37inch. - and anti-skid rubber bring better silencing performance. - Great for violin practicing! Professional violin accessory for violin player. - It's designed to lower and soften the volume of violin so that the treble is not so sharp. - High grade rubber material, non-deformation and wear-resistant, ensures a long service life. - tool for volume control, make the sound of violin be dampened or muted to decrease treble.Package list: 5 x Violin Practice Mute