VERITAS* Electric Guitar Strings maintain their tone, tuning stability and intonation thanks to ACT* (Accurate 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 Quantum Nickel* wrap wire delivers more power, brighter tone and greater flexibility and responsiveness. All VERITAS* sets include both standard plain steel AND Xenon Power-Plain* strings, which have increased output to balance with the wound strings.