Light (9, 11, 16, 24, 32, 42) Quantum Nickel™ Guitar Strings wound on Round Cores. VERITAS™ are a completely new category of electric guitar strings designed to combine more power with longer life. QUANTUM NICKEL™, is more magnetic, and therefore we believe more responsive and powerful than ordinary NPS 8% nickel plated wire. Accurate Core Technology™ (ACT™) was developed to reinforce the core wire and fill in imperfections along its entire length. Superior core wire is recognized as the foundation for tone, accuracy, and durability. VERITAS™ strings can last 4x longer than other strings. 3 free extra XENON™ power-plain™ strings (9, 11, 16) are included in every pack to complement the higher output of the VERITAS™ wounds.