· PRECISION WOUND - D’Addario 80/20 Bronze acoustic guitar strings are precision wound over a hexagonal high carbon steel core· BOLD, BRIGHT SOUND - The 80/20 Bronze wrap wire provides bold, bright acoustic sound, with crisp projection that fills the room· THE ORIGINAL ACOUSTIC STRING - 80/20 Bronze was originally created by John D’Addario Sr. and renowned guitar maker John D’Angelico in the 1930s· EARN REWARD POINTS - Our 80/20 Bronze acoustic guitar strings come with a code on the recyclable VCI bag, which you can register to earn Players Circle points· MADE IN THE USA – D’Addario 80/20 Bronze strings are made in the USA—drawn to our exacting specifications at our New York production facility