Continuing their passion for innovation and high-quality products, Ernie Ball introduces Paradigm electric and acoustic guitar strings - the world’s strongest and most advanced string out there! They also feature the first fully backed guarantee - if Paradigm strings break or rust within 90 days, Ernie Ball will replace them! Since 1962, the Ball family has been dedicated to crafting guitar strings that shape the landscape of music. Paradigm strings feature superior break-resistance and unparalleled durability while delivering the iconic Slinky tone Ernie Ball has always been known for. Ernie Ball Paradigm 80/20 Bronze Acoustic Guitar Strings Features Ernie Ball's new state-of-the-art wire drawing process dramatically increases tensile strength Plasma-enhanced wrap wire provides improved corrosion resistance Ernie Ball's patented Everlast nanotreatment repels sweat and buildup No flaking or difference in feel from traditional strings Iconic Slinky Tone Features a fully backed guarantee – if Paradigm strings break or rust within 90 days, Ernie Ball will replace them!