Features 1、The little gadget is helpful for lower the noise while you are practicing guitar, especially for late-night practice. 2、Inner side designed with soft sponge, no harm to the guitar string. 3、Easy to install and remove, no tools required, just screw up/off the screw. Specification Features: The little gadget is helpful for lower the noise while you are practicing guitar, especially for late-night practice. Inner side designed with soft sponge, no harm to the guitar string. Easy to install and remove, no tools required, just screw up/off the screw. The easy-to-use muter is excellent for you to practice guitar anywhere anytime without disturbing others. Universal and adjustable, it is really a nice training tool for the guitar beginner. Specifications: Material: ABS+sponge+metal Item Size: 80 * 17 * 22mm / 3.15 * 0.67 * 0.87in Item Weight: 10g / 0.38oz Package Weight: 16g / 0.58oz Package Size: 9.5 * 6 * 3cm / 3.74 * 2.36 * 1.18in Packing List: 1 * Muter Package List 1 * Muter