D'addario ej45ff pro arte dyna carbon normal EJ45FF, normal tension, features Pro-Arté Carbon trebles and Dynacore basses for unsurpassed superior intonation with the perfect blend of tone, brightness, and projection.  Experience the vibrant, projecting & contemporary tone of D’Addario’s Pro-Arté Carbon strings. Designed to the exacting specifications of our Pro-Arté nylon trebles, our fluorocarbon strings deliver unmatched superior intonation, a responsive attack and modern projecting tone. Paired with the bold and powerful Dynacore basses, Pro-Arté Carbons offer the ideal combination of tension and tone for today’s classical player. Superior intonation with a responsive attack and modern projecting tone Paired with our Dynacore composite core basses for a bold, powerful and full round tone Normal Tension String Gauges: Trebles .0240, .0272, .0331 Basses .028, .035, .044