80/20 Bronze are our brightest acoustic strings, made to give your guitar an unparalleled shine. With the addition of our XT coating, these 80/20 strings obtain advanced corrosion resistance, resulting in an increased lifespan compared to standard acoustic strings. XT 80/20 Bronze strings are constructed with a NY Steel core, 80/20 bronze wrap wire, and Fusion Twist technology which, in addition to lasting longer, allows them to defy breakage and maintain pitch better, all while preserving the bold, bright tone 80/20 is known for. This 12-56 Light Top/Medium Bottom gauge