1、[12 String Replacement] This set of strings includes 12 strings from .012 to .052, perfect for replacing the strings on your 12 string acoustic guitar, ensuring optimal performance. 2、[Phosphor Bronze Material] Made of phosphor bronze material, these strings deliver a bright and vibrant tone, enhancing the overall sound quality of your guitar. 3、[Protective PU Coating] Each string is coated with PU, effectively protecting the strings from corrosion and rust, prolonging their lifespan, allowing for long lasting performance. 4、[Individual Packaging] Each string is individually packaged, making it convenient to carry and preventing oxidation, ensuring that the strings remain fresh. 5、[Easy to Install] These guitar strings are designed for easy installation ensuring that you can quickly and effortlessly replace your old strings with these new ones.