EJ45 Pro Arte Normal Tension Classical Guitar Strings. Pro-Arte strings are the world's best selling and D'Addario's premium classical guitar strings. All Pro-Arte treble strings are sorted by a sophisticated computer-controlled laser machine which performs diameter/tension measurements and quality checks, insuring true sounding, precise trebles in every set. Pro-Arte basses are wound using silverplated copper on a multi-filament nylon core. Silverplated Nylon.
Specifications:Select Nylon Gauges: .028-.0322
Silverplated Copper Nylon Core Gauges:
.0403-.029-.035-.043