D'Addario XT Phosphor Bronze Acoustic Guitar String Set 12-56 LT/HB Bluegrass XTAPB1256

D'Addario XT Phosphor Bronze String Sets use NY High Carbon Steel Plain Steel Strings and NY High Carbon Steel Hex Core wire for the wound strings.  The NY steel is manufactured by D'Addario in New York.  Each string features the Fusion Twist technology for unrivaled tuning stability and break resistance.  D'Addario XT strings stay in tune 131% better than traditional strings!  Combined with the highest quality phosphor bronze XT treated wrap wire each XT set maintains the familiar un-coated tone while adding up to 4 times more string life.