These are some guitar strings made ofsilver platedcopper alloy and nylonmaterials. With good texture and durable material, it can help you easily replace old guitar strings and make your guitar sound clearer and comfortable. This is an excellent guitar string that will be a better alternative for you. Features -Color:White -Material:Silver Plated Copper Alloy,Nylon,Coating -Size:7.50X7.50X0.80cm/2.95X2.95X0.31in -These guitar strings mainly use nylon andsilver platedcopper alloy, strong and durable, not easy to break. - Easy to replace and easy to use, making them a perfect choice for you to change for the old ones. -Features a convenient string set design, making it easy to install and replace the strings on your folk guitar. - The sound is clear, the string is gentle, the resonance is rich and comfortable. - This is a professional guitar replaceable string that will bring you a better using experience.Package List6 x Guitar Strings