3 SETS OF MARTIN MA140 ACOUSTIC GUITAR STRINGS!These are the new and improved M140's from Martin. If you are used to the M140's, this is what Martin has replaced them with, now with longer lasting tone (New Model number is MA140)!(3 PACK VALUE SET) By far our best selling acoustic guitar string! Need help deciding what gauge set to buy? Here is a quick run down- Extra Lights - Most likely a little thinner than what your guitar came with new. A bit easier to play/bend, but will also have a little lighter tone. Lights - MOST NEW GUITARS COME WITH LIGHTS. By far the most popular gauge of string. Light enough for easy playing, but thick enough for a good full tone. Our recommendation if you're unsure. Mediums - In the acoustic world, this is the heaviest standard gauge of string. Firmer to play, but will also give you a nice full tone. Many heavy strummers prefer mediums. Want extra lights or mediums? Check out our other listings, we have it all! 3 sets of Martin MA140 strings. Martin MA140 Light Acoustic Guitar Strings have an 80/20 composition for brilliance, clarity, and longevity of sound. The Bronze winding alloy makes guitar strings have deep, rich basses and clear, bright trebles. The Martin MA140 acoustic string pack comes with Martin's high-quality guitar strings for daily use. Core and wrap wires meet strict requirements that make the grade because Martin guitar strings are wound to precise specifications. Gauges: 12-16-25-32-42-54Features:Bronze alloy for brilliance and long lifeStudio-quality performance We guarantee that all of our strings are factory fresh, so they will sound great when you get them! Don't buy from the big box stores and settle for stale strings! We are a local music shop, and as you can see by our feedback, our #1 concern is customer satisfaction. Please email us with any questions! Thank you for supporting "the little guy". We love our customers, and hope it shows!