CNL-3T, light tension, is a clear nylon treble classical half set great for beginners or experienced players with a lighter touch. Pro-Arté, the world's most popular classical strings are D'Addario's premium classical trebles. All Pro-Arté treble strings are sorted by a sophisticated computer-controlled laser machine which performs diameter and tension measurements, ensuring true-sounding, precise trebles in every set. Each half set contains 3 treble strings in a convenient resealable pouch.