D'Addario EXP17 with NY Steel Coated Phosphor Acoustic Guitar Strings， Coated， Medium， 13-56<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> D'Addario's most popular gauge for heavy strumming， flat-picking and resonant， projecting tone </span></li><li><span class="a-list-item"> EXP Coated phosphor bronze for warm， bright， well balanced acoustic tone and 4 times more life </span></li><li><span class="a-list-item"> Includes D’Addario’s exclusive NY Steel， the same high carbon steel found in the NYXL series for unprecedented strength and pitch stability. </span></li><li><span class="a-list-item"> Environmentally friendly， corrosion resistant packaging for strings that are always fresh </span></li><li><span class="a-list-item"> String Gauges: Plain Steel .013， .017， Phosphor Bronze Wound .026， .035， .045， .056 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51fKgPI-scL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61yzYGfPsCL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61ZVmniwVpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51r96FikWkL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61Ln8mfplML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51xtrLgbnML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/91s99rOSHZS.png" noproxy>