THE 820 FLAMENCO SETS CONTAIN RED NYLON TREBLES AND SILVER-PLATED WOUND BASSES. ESPECIALLY DESIGNED FOR THE FLAMENCO PLAYER, THIS SET PRODUCES EXTREMELY BRILLIANT TONES WITH ONLY THE SLIGHTEST LEFT HAND FINGER PRESSURE. BRIGHT TONE TENSION: MEDIUM STRING GAUGES: RED NYLON: .029, .034, .041, SILVER-PLATED WOUND: .029, .034, .042 MADE IN THE USA WITH AMERICAN WIRE PACKAGED USING MAP TECHNOLOGY (MODIFIED ATMOSPHERE PACKAGING) TO PREVENT TARNISHING AND ENSURE FRESHNESS