Ziko offers the highest performance guitar strings while keeping the price very reasonable. Bright tone and phosphor bronze finish allows long life and great, smooth action. High E .010, B .014, G .023, D .030, A .039 and low E .048. Excellent choice for acoustic-electric guitars as they deliver excellent magnetic output. Copper plated steel wire is precisely wound onto a round core. Precise intonation and unparalleled consistency, set after set.