Martin MSP7000 SP Lifespan 92/8 Phosphor Bronze Acoustic String， Extra Light<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 phosphor bronze provides a classically expressive tone </span></li><li><span class="a-list-item"> Extra Light gauge </span></li><li><span class="a-list-item"> .010， .014， .023， .030， .039， .047 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51N02WGrKgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4195e6BSpEL.jpg" noproxy>