Martin MM11 Retro Monel Acoustic Guitar Strings， Custom Light， 11-52<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Custom Light: 11-52 </span></li><li><span class="a-list-item"> Crafted from a long-lasting proprietary nickel-based alloy blend </span></li><li><span class="a-list-item"> Mellows quickly to a warm vintage tone that brings out the unique， woody sounds in your acoustic guitar </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31SZ4fy9t7L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51SlqA4uVPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31H4Fwc41uL.jpg" noproxy>