These strings are precision-wound with corrosion-resistant phosphor bronze onto a carefully drawn, hexagonal high-carbon steel core. This construction ensures a long-lasting, bright tone with excellent intonation.

Introduced by D Addario in 1974, phosphor bronze has since become synonymous with a warm, bright, and well-balanced acoustic guitar sound.

D Addario EJ17 Guitar String Specs 

• D Addario s most popular choice for heavy strumming, flat-picking and resonant, projecting tone
• Preferred for its warm, bright, and well balanced acoustic tone
• Environmentally friendly, corrosion resistant packaging for strings that are always fresh
• Made in the U.S.A. for the highest quality and performance
• String Gauges: Plain Steel .013, .017, Phosphor Bronze Wound .026, .035, .045, .056