Pro-Arte lightly polished composite strings feature an exclusive multifilament core material which delivers a powerful, but warm tone which lasts 2-3 times longer than traditional classical strings. Each wound string is polished to a smooth surface for reduced finger noise. In addition to three traditional nylon treble strings, each set contains an optional monofilament composite 3rd/G string, which provides greater projection and optimal balance between basses and trebles. All Pro-Arte treble strings are sorted by a sophisticated computer-controlled laser machine which performs diameter/tension measurements and quality checks, ensuring true sounding, precise trebles in every set. Pro-Arte lightly polished sets are also ideal for recording.