Savarez 520P1 Traditional Classical Guitar Strings, High Tension, Red Card* ** Traditional Series^Normal tension^Rectified nylon trebles, silver plated wound basses ** The Savarez 520P1 normal tension string set for nylon string guitars feature Plastic Wound (B, G, e) trebles paired with Traditional Wound basses. The surface texture of rectified nylon limits finger slipping and improves the control of finger placing for greater playing comfort. Also offers additional harmonics and detail while providing a textured feel,