Ernie Ball 2144 Power Slinky Acoustic Guitar Strings 13-56 2 Pack<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> String Gauges: Gauges: .013， .017， .026， .034， .046， .056 </span></li><li><span class="a-list-item"> Ernie Ball 2144 Power Slinky Phosper Bronze Acoustic Guitar Strings give a warm rich tone and reduced string noise. </span></li><li><span class="a-list-item"> Get this 2-pack for a great savings and be prepared for your next string change! </span></li><li><span class="a-list-item"> Engineered to meet the demands of acoustic musicians worldwide， these concert quality strings provide deep， rich bass notes with clear bright trebles. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51z9lrNd%2B0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Ve4YNpMZL.jpg" noproxy>