XSAPB1256, XS Phosphor Bronze 12-56 acoustic guitar set, light top/medium bottom.
Every single string in an XS set is treated with D'Addario's protective microcoating, a super-thin coating that effectively repels dirt and sweat. XS strings last 4 times longer than traditional uncoated strings without affecting the tone and feel that D'Addario strings have become known for. D'Addario's unique steel-carbon fiber core combined with a strong anchoring of the ball, through the so-called Fusion Twist technology, provides a string with unmatched strength and holds the melody significantly better than regular strings.
