Hard-tension 6 string set for classical guitar from Pro-Arté series that features Pro-Arté Carbon trebles and Dynacore basses and offers the ideal combination of tensions and tone for modern classical player. Pro-Arté Carbon trebles are fluorocarbon strings designed to the exacting specifications that deliver superior intonation with the perfect blend of contemporary vibrant tone, great projection and responsive attack.. Dynacore basses have composite cores and provide bold, powerful tone. Gauges: trebles - .0248, .0280, .0339; basses - .029, .036, .046.