Regular 6 string set for acoustic guitar from Earthwood 80/20 Bronze Acoustic series that provides crisp, bright sound with lots of clarity and pleasing overtones. Strings are made from 80% copper-20% zinc wire wrapped around hex-shaped tin-plated steel core wire, with a layer of silk between the wrap and steel core. Silk layer produces a more mellow sound and makes the string feel more comfortable while reducing finger noise. Strings are precisely manufactured to the highest standards and most exacting specifications to ensure consistency, long life and optimum performance. Gauges: .013, .017, .026, .034, .046, .056.