Ernie Ball Earthwood Medium Light Phosphor Bronze Acoustic Guitar Strings, 12-54 Gauge (P02146)

Warm, rich tone with excellent projection and clarity
Medium Light, the most popular gauge, consists of plain steel strings (.012, .016.) and phosphor bronze wound strings (.024, .032, .044, .054)
Phosphor bronze wound on a hex-shaped, high-carbon steel core wire
Element Shield Packaging prolongs string life and keeps strings as fresh as the day they were made
Made in California, USA with the freshest and finest materials

Ernie Ball Earthwood Phosphor Bronze acoustic guitar strings are made from 92% copper, 7.7% tin, 0.5% phosphorus wire wrapped around brass-plated hex-shaped steel core wire. Phosphor Bronze produces a rich tone with excellent clarity. Gauges .012, .016, .024w, .032, .044, .054.