Featuring a longer life and no surface coating or treatment, the Veritas strings are a revolutionary and patented type of Phosphor Bronze acoustic guitar string. 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 perfects 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.