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 has G and C strings with a highly flexible steel core wrapped with pure silver;G Chrome Steel;Fast response with a warm sound;String gauges/tension:;dolce 0.77mm/6.3kp/13.8lbs;medium 0.79mm/6.4kp/14.1lbs;forte 0.81mm/6.5kp/14.3lbs;