uxcell Heavy Rubber 5 Claw Cello Practice Ultra Mute Silencer Sound Black It greatly reduces volume for apartment and late night practicing. This popular five-prong mute is lightweight and safe. Total Size: 7 x 2.5 x 3.8cm/ 2.7" x 1" x 1.5"(L*W*H) Net Weight: 55gMaterial: Rubber Package Content: 1 x Cello Mute;Color: Black; Product Name: Cello Mute