Product Description Veritas strings are a revolutionary new type of phosphor bronze acoustic guitar string, with longer life and no outer surface coating or treatment. Veritas strings last up to 4 times as long as ordinary acoustic guitar strings. Accurate core technology (act) is at the heart of veritas strings. Superior core wire is the foundation for tone, accuracy, and durability. Dr's patented act strengthens and perfect any variations of the core wire. The core wire is far stronger and more accurate along its entire length for highly improved pitch and longer life. Players note veritas strings posses a robust and resonant tone, with excellent sustain and extreme stability in standard and alternate tuning applications. "Amazed these strings last so long and are not coated," notes happy traum. From the Manufacturer VERITAS™ Acoustic Guitar Strings maintain their tone, tuning stability and intonation thanks to our Coated Core Technology™, a process of coating the round core wire, which locks the wrap wire in place and extends string life by protecting the core from corrosion. A phosphor bronze wrap wire delivers a traditionally bright tone and natural feel. All VERITAS™ sets include both standard plain steel AND Xenon Power-Plain™ strings, which have increased output to balance with the wound strings.