This is a 3 sets of Martin MA545 Light Medium Phosphor Bronze Guitar Strings
Martin is one of the top guitar manufactures and to achieve the last ingredient to their process in making the top guitars in the world, they manufacture their own strings to provide a very fine sound that will match their state of the art guitars. Martin strings have excellent tuning stability and a great resist corrosion to give them a great play-ability. If you are looking for the best guitar strings for your Martin Guitar go with Martin strings. Very popular with top hi profile guitar players and anyone looking for a top quality guitar strings. The gauges are .0125, .0165, .0255, .0335, .0435, .0550
