These acoustic guitar strings are made of high-strength bronze material, ensure maximum strength and durability for long-lasting usage. Easy installation, save your time and effort. Not easy to break and deform, a good helper for your acoustic guitar. Features -Color:Coffee -Material: bronze -Size:11.00X10.00X8.00cm/4.32X3.93X3.14in -Diameter: 0.25mm, 0.36mm, 0.58mm, 0.76mm, 0.99mm, 1.19mm - These strings are made from bronze, offering its unique feeling and level of responsiveness. - The strings includes different diameter, you can choose according to your needs. - The installation is simple without any complicated tools required, guitar strings are convenient to use. - Changing the strings on an acoustic guitar, maintaining the instrument's playability and cleanliness. - Guitar strings fits for guitarist to make your acoustic guitar look beautiful and awesome. Package list: 60 x acoustic guitar strings (0.25mm, 0.36mm, 0.58mm, 0.76mm, 0.99mm, 1.19mm)