Ernie Ball Nickel Plain Single Guitar String .009 6-Pack<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Used on electric and acoustic guitars， banjos and mandolins but， not classical guitars </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41QcCWf7vhL.jpg" noproxy>