Are you looking for some professional, yet guitar strings retainer? Are you in search of some sturdy, trustworthy guitar strings retainer that can do multiple jobs at once? , ! Our professional guitar strings retainer must meet your needs. It is one of the for you. Features - Material: metal. - Made of metal material, high strength and durability, glossy surface. Ensures practicability and nice look. - Come with mounting screws, very easy to install. Small and light, very convenient to carry. - Great roller string tree retainer, guide guitar parts to replace your broken, damaged or old string retainer. - Ensures proper string tension for tone, improving your guitar's performance and the precision and stability of the tune. - Help to lessen the stress on the guitar strings, reducing the wear on the strings for longer life of the strings. Package list: 4 x Guitar String Retainers 4 x screws