D'Addario XTAPB1047-12

String gauges: .010/.010, .014/.014, .023w/.008, .030w/.012, .039w/.018, .047w/.027w
Strength: Light-tension
Material (winding wire): Phosphor bronze
Winding type: Round-wound
Microscopically thin, moisture-repellent coating on all 12 strings has no effect on tone or feel
Made of "HIGH CARBON NEW YORK STEEL" and in combination with "FUSION TWIST" for the fastening of the ball ends, the strings provide highest tensile strength and tuning stability