Find Reviews and Compare Prices for:       All ProductsAcoustic Guitar Strings     4.0 (1)   Add a review Martin MSP4050 SP Phosphor Bronze Custom Light Acoustic Guitar Strings...   Martin SP Studio/Performance Series strings are ideal live, in the studio, or wherever maximum string life is desired. The creation of these new high performance strings is a result of research done in cooperation with specialty steel producers. Due... Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Martin MSP4050 SP Phosphor Bronze Custom Light Acoic Guitar Strings in 150 stores, 2 results found Note: The most expensive offers towards the end of the page are often for multiple packs. Image Description   Store   Price Martin MSP 4050 SP Phosphor Bronze Custom Light Acoustic Guitar Strings If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $2 (used) Go to Store Martin MSP 4050 SP Phosphor Bronze Custom Light Acoustic Guitar Strings If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $2.95 Go to Store You can also search these stores   Find this product on eBay   eBay   0 Store Reviews   Search on eBay Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More 6 String Sets .011 Gauge Acoustic Guitar Strings Other Acoustic Guitar Strings internal use: spec114 spec141 spec602