Rectified nylon SAVAREZ trebles and Traditional wound SAVAREZ basses. The name SAVAREZ brings to mind the famous 520R set with red, yellow and white cards, the set which made the Savarez name, a “best seller” yesterday and today! When they came out, they allowed musicians for the first time to choose between three tensions: RED (Normal Tension) - YELLOW (High Tension) - WHITE (Low Tension).