Ernie Ball Earthwood Phosphor Bronze Acoustic Guitar Strings are made from 92% copper, 7.7% tin, 0.3% phosphorus wire wrapped around brass plated hex shaped steel core wire providing; warm, balanced tone with excellent projection. BALL END Our ball ends are made using brass wire rod which; machined and cut; exacting specifications; ensure; precise fit and function. WRAP WIRE Earthwood Phosphor Bronze strings are precision wound with phosphor bronze wire providing; warm, balanced tone with superior intonation and consistency. CORE WIRE The core; made from brass plated high carbon steel hex wire providing excellent durability.
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