This product is made of high-quality material, durable and practical to use. It is designed to fit most guitar bass strings, easy to install and use. It can effectively reduce the string noise when pressing the string, improve the playability of the instrument, and make the string sound more mellow and beautiful. It is suitable for electric guitar, acoustic guitar, bass guitar etc. This product is easy to install and use, and can effectively reduce string noise when pressing the string. It can make the string sound more mellow and beautiful, improve the playability of the instrument, and extend the service life of the string.