• Silver wound on nylon basses with clear rectified nylon trebles
• Hard tension, the heaviest tension available in the Classics series
• Rectified nylon trebles for unsurpassed intonation
• Corrosion resistant packaging for strings that are always fresh
• Made in the U.S.A. for the highest quality and performance

EJ31's are a hard tension classical guitar string set containing silver on nylon wound strings and rectified clear nylon treble strings for highly accurate intonation.

D'Addario Classics utilize our precision rectified nylon trebles - each ground using our proprietary centerless grinding technique. Roundness and dimension control are unsurpassed, ensuring absolutely perfect intonation. Classics are known for their warmer, mellower tone and slightly textured feel.

D'Addario, the world's largest manufacturer of musical instrument strings, is known as The Players Choice with a reputation for unsurpassed quality and consistency. D'Addario's innovative, packaging reduces waste and provides protection from corrosion. All D'Addario strings are manufactured in the U.S.A. using proprietary, digitally controlled, state-of-the-art machinery for unmatched performance, set after set.