Acoustic guitar string set for 12 string guitars. Made with an 80/20 bronze alloy wrap with a layer of silk between the wrap and steel core. The silk helps produce a more mellow sound and makes the string feel more comfortable while reducing finger noise. Earthwood 80/20 Bronze strings are precision wound with 80/20 bronze wire providing a bright, balanced tone with superior intonation and consistency. The core is made from brass plated high carbon steel hex wire providing excellent durability. Gauges .009 .009, .012 .012, .020w .009, .026 .012, .036 .020p, .046 .026