Martin MSP4850 SP Phosphor Bronze Acoustic Bass Strings， Medium<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Gauges: .045 - .105 </span></li><li><span class="a-list-item"> Ultra-high quality steel core </span></li><li><span class="a-list-item"> Core wires and plain strings plated with an acoustic bronze finish </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/518x7wKN9RL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41MskbK3jFL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31C6HDh-p-L.jpg" noproxy>