Thomastik-Infeld SB113 Acoustic Guitar Strings， Spectrum Series 6 String Set (13-57) E， B， G， D， A， E<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Used by Students and Professionals around the world </span></li><li><span class="a-list-item"> This set includes: .013， .017， .026， .036， .045， .057 </span></li><li><span class="a-list-item"> Genuine Thomastik-Infeld Product </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51yEp2Oc%2BwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51u1h-AEBbL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31IjB%2B5XvWL.jpg" noproxy>