Fender 80/20 Bronze Acoustic Guitar Strings, LightLIVEN UP YOUR ACOUSTIC TONE If you're looking to brighten up that acoustic tone, Fender 80 20 bronze strings deliver articulate sound and great feel, making them perfect for an acoustic guitar with a naturally dark tone. Made from 80% copper and 20% zinc, these strings will not only bring your acoustic sound to life, but also last throughout the most enduring performances. Ball end design Available in extra light, custom light, light and medium gauges