Famous for first class strings since 1956;Steel core strings, wrapped with thin threads of pure or alloyed metal ;Warm, brilliant tone and long durability;"Classic"series are the standard strings;"Silver Sound" series G string highly flexible steel core pure silver wound top layer;G Chrome Steel;String gauges/tension: ;Dolce 0.74mm/4.8kp/10.5lbs;Medium 0.75mm/4.9kp/10.8lbs;Forte 0.76mm/5.0kp/11.0lbs;