Check the listing for details. D'Addario EJ41 12-String Phosphor Bronze Acoustic Guitar String 9-45 Super Light. Condition: New. Listed at 11.94 USD. D'Addario EJ41 12-String Phosphor Bronze Extra Light 09-45 EJ41, D'Addario's lightest gauge 12-string acoustic guitar set provides easy playability while retaining adequate tone and projection for most playing situations. Phosphor Bronze was introduced to string making by D'Addario in 1974 and has become synonymous with warm, bright, and well balanced acoustic tone. D'Addario Phosphor Bronze strings are precision wound with corrosion resistant phosphor bronze onto a carefully drawn, hexagonally shaped, high carbon steel core. The result is long lasting, bright sounding tone with excellent intonation.EJ41 Extra light gauge 12-string set, ideal for heavy strumming and a resonant, projecting tonePreferred for its warm, bright, and well balanced acoustic toneEnvironmentally friendly, corrosion resistant packaging for strings that are always freshMade in the U.S.A. for the highest quality and performance EJ41 String Gauges: Plain Steel .009/.009, .013/.013, Phosphor Bronze Wound .021/.008(p), .029/.011(p), .036/.016(p), .045/.026(w)