• 92% copper, 7.7% tin, 0.3% phosphorus around a hex shaped steel core.
• Warm balanced tone.

Ernie Ball Earthwood Phosphor Bronze

• Extra Light strict thickness: 010, 014, 020w, 028, 040, 050

• Light string thickness: 011, 015, 022w, 030, 042, 052

• Medium Light string thickness: 012, 016,,024w, 032, 044, 054

• Medium string thickness: 013, 017, 026w, 034, 046, 056

• 12 Strings Light string thickness: 009, 012, 009, 012, 020, 026w, 009, 012, 020w, 026w, 036w, 046w