The unique muffler is exquisitely crafted and designed to conform to the curve of the cello. Can be installed or disassembled at any time without affecting performance. Moreover, it can make the cello sound softer, lower the volume, and make the high pitch less harsh. Features -Color: Black -Material: Rubber -Size: About 3.50X3.50X1.40cm/1.38X1.38X0.55in - Manufactured with rubber material, it is professional and durable for a long term use. - This practical violoncello can reduce the volume, perfect for beginner. - The workmanship of this product is perfect, and you will have a good experience in using it. - Being able to lower the volume of the cello, you can practice your cello at ease without worrying about disturbing others. - Smooth and practical, this violoncello mute will not scratch your violoncello and violoncello bridge. Package list: 1 x Cello Sordine