Unused product. The bag is torn, please check the strings in the photos. Manufacturer's Description: D'Addario XSAPB1152 Phosphor Bronze Coated Strings 11-52 Custom Light D'Addario Acoustic Guitar Strings The D'Addario "XS Series" is a new product that will revolutionize the coated string category. Ultra-thin film coating is applied to all wound strings, and a unique polymer coating treatment is applied to the plain strings to protect the strings from substances that promote dirt and deterioration. The latest coating technology and D'Addario's unique manufacturing technology have been combined to create an innovative coated string unlike any other. ・Ultra-thin film coating on the entire string ・5 times the durability of uncoated strings ・The strongest protection performance in D'Addario string history ・Smooth feel Ultra-thin coating The ultra-thin ePTFE film, which is less than 1/10th the thickness of a hair, is created by a new, dramatically improved coating technology. It protects the wound strings from dirt and dust, and maintains a fresh tone for a long time. NY STEEL D'Addario's unique NY Steel (high-carbon steel alloy), which is also popular in the NYXL and XT series strings, boasts overwhelming strength and tuning stability compared to conventional strings. FUSION TWIST Fusion Twist processing prevents tuning deviations caused by string slack. This results in excellent tuning stability and increased breaking durability.