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Martin MSP4100 Phosphor Bronze strings are great for live performances, in the studio or wherever maximum string life is desired. Made with the highest quality bronzed steel core wire and finished with a phosphor bronze wrap wire, these Martin SP strings can stand up to rigorous practices and performances delivering a consistent true tone time after time.
Martin's newly redesigned string packaging makes the product easier to identify and ensures a longer shelf life. Martin string packages now feature a unique color for each product family making it simple to efficiently browse their entire line and find exactly what you're looking for. Martin has also begun packaging their strings in a sealed flow wrap packet to help ensure that the strings stay fresher longer, allowing players to store strings for long periods of time without worries of tone degradation.
String gauge: E - .012, B - .016, G - .025, D - .032, A - .042, E - .054