Martin MSP7700 SP Lifespan 92/8 Phosphor Bronze Acoustic String， Baritone Guitar<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Treated with Martin's Clear tone proprietary technology for a longer lifespan than regular strings </span></li><li><span class="a-list-item"> 92/8 bronze provides a bright and vibrant tone </span></li><li><span class="a-list-item"> Baritone gauge </span></li><li><span class="a-list-item"> .014， .020， .030， .042， .054， .070 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51j3xYAYEbL.jpg" noproxy>