Ernie Ball Earthwood 2148 Phosphor Bronze Acoustic Guitar Strings MADE IN USA (Light Gauge 11-52) Ernie Ball Earthwood Phosphor Bronze Acoustic Guitar Strings are 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. Guitar String Set (Package includes (1) Ernie Ball Earthwood 2148 Light Phosphor Bronze Guitar Strings) Gauges:  E-1st: .011 B-2nd: .015 G-3rd: .022 D-4th: .030 A-5th: .042 E-6th: .052 Click here to see more products!