Known for their warmer, mellower tone and slightly textured feel, Pro-Art Rectified strings feature rectified nylon trebles, ground using our proprietary centerless grinding technique. The result is roundness and dimension control that are unsurpassed, ensuring consistently perfect intonation. Complemented by our famous nylon core silver-plated copper wound basses, Pro-Art Rectified sets are the epitome of classical warmth. Normal Tension sets are our best-selling tension, preferred for the balance of rich tone, comfortable feel, and dynamic projection.