80/20 Bronze 

Made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. The most popular acoustic guitar strings provide a crisp, ringing sound with pleasing overtones.

Phosphor Bronze

Made from 92% copper, 7.7% tin, 0.3% phosphorus wire wrapped around tin plated hex shaped steel core wire. These guitar strings have a light orange, gold color and provide a mellow, ringing sound, with excellent clarity. Gauges .011, .015, .022w, .030, .042, .052