Pioneered in 1974 and still revered today, Phosphor Bronze has become synonymous with warm, well-balanced acoustic tone. Phosphor Bronze strings are precision wound onto a carefully drawn, hexagonally-shaped high carbon steel core. The result is lasting, vivid sound with excellent intonation.

• D'Addario's most popular acoustic guitar string set 
• Preferred for its warm, bright, and well balanced acoustic tone 
• Made in the U.S.A. for the highest quality and performance