Acoustic Guitar Strings, 13-56, Extra Light Tension, Smooth Feel, Ultra Thin Film Coverage On Each Wound String, Unique Polymer Treatment On Plain Steels, High Protection Level, NY Steel High Carbon Steel Core, plain wound, Fusion Twist technology, break resistance and tuning stability, wounds fully protected from contaminants, recyclable 100% packaging, gauges: 13, 17, 26, 35, 45, 56.

Strings for 12-String Acoustic Guitar, Light Tension, Coated, Standard Tuning, Cover Material: 80/20 Bronze, Extended Life Treatment on each string, preserves the natural tone and feel of uncoated strings, Steel Wire with high carbon content and Fusion Twist technologies that provide tuning stability and unmatched resistance to breakage, stays in tune better than traditional strings, 131% lasts at least 4 times longer than traditional uncoated strings, lockable internal packing resealable for easy opening and storage of unused strings, gauges: .0100, .0100, .0140, .0140, .0230, .0080, .0300, .0120, .0390, .0180, .0470, .0270.