D'Addario Pro-Arté Black Nylon Dynacore sets featuring black nylon trebles are a popular choice for their rich tone, increased resistance, and strong projection. They are constructed using our exclusive multifilament stranded core material with a revolutionary winding technique. The result is a truly unique and contemporary tone that is rich, round and full with dramatically improved string life, tuning stability and consistency. The included D'Addario Titanium trebles compliment the set with their bright and projecting tone for optimal balance across the set. Additionally, like all Pro-Arté trebles, each string is laser sorted for unsurpassed intonation consistency.