D'Addario - Pro Arte Nylon Core EJ45

They offer a warm, projecting tone, due to the bass strings silver plated copper wrap wire. The multi-filament stranded nylon core, dramatically improves tonation and guarantees 2-3 times the longevity.

The trebles in all Pro-Arte Strings are checked for quality by computer-controlled machines that use lasers to perform diameter and tension measurements to insure precise intonation.