The guitar string is made of brass materials, rustproof, , sturdy and not easy to break. Manufactured with excellent production technology, has a smooth surface, making the installation very simple and convenient, great for replacing broken string with ease. Features -Color:Assorted Color -Material:Brass -Size:11.20X11.40X0.20cm/4.40X4.48X0.08in -Diameter: 0.28mm; 0.38mm; 0.61mm; 0.81mm; 1.07mm; 1.32mm - Precision manufacturing assures consistent and stable tone, the strings are resonant and rich, and feel comfortable. - Brass guitar strings, the expression is rich, and it is not to changes in the temperature and humidity of the environment. - Brass guitar strings are , wear resistance, anti-rust, smooth surface, sturdy in use. - The performer plays freely on the stage, these guitar strings have a lasting service life, and is rich in harmonics. - The guitar strings make the voice clear and transparent, powerful, the remaining sound short, beautiful and moving. Package list: 6 x acoustic guitar strings