Pro-Arte, the world's most popular classical strings are D'Addario's premium classical guitar string sets. All Pro-Arte treble strings are sorted by a sophisticated computer-controlled laser which performs diameter and tension measurements, ensuring true-sounding, precise trebles in every set. Pro-Arte basses are wound using silver-plated copper on a multi-filament nylon core for consistent and warm, yet projecting tone. Features/Specifications: Precision wound silver on nylon Laser sorted clear nylon treble strings for consistent, precise intonation warm, projecting tone and the utmost consistency Made in the U.S.A. for the highest quality and performance Environmentally friendly, corrosion resistant packaging for strings that are always fresh String Gauges: Trebles .0285, .0327, .0410 Basses .030, .036, .044
