Ernie ball acoust. 10-50 Phosphor bronze alloy

Made from 92% copper, 7.7% tin, 0.3% phosphorus wire wrapped around hex-shaped brass plated high carbon steel core wire. These guitar strings have a light orange, gold color and provide a mellow, ringing sound, with excellent clarity. Gauges .010, .014, .020w, .028, .040, .050