Product DescriptionPursue your passion with D?Addario?s most popular coated acoustic guitar string set, the EXP17 Coated Phosphor Bronze Acoustic Guitar Strings that deliver the ideal balance of volume, projection and comfortable playability. With EXP coated phosphor bronze strings you get the familiar warm, bright, well balanced acoustic tone of uncoated strings but with 4 times more life. These coated light acoustic guitar strings feature plain steel strings and hexagonal cores made of our revolutionary NY High Carbon Steel. Envisioned, perfected, and manufactured by D?Addario in New York, this break-resistant, high-carbon steel wire delivers unprecedented strength and pitch stability. Your strings will sound as good at the end of a show as they did during the first set of the night. D?Addario leverages centuries of string-making experience to bring you the most durable, consistent and enduring guitar strings. Made in the USA for the highest quality and performance, only D?Addario strings are sealed inside and out. Unlike other coated strings that are wound then coated, D?Addario strings feature an ultra-fine layer of EXP coating that is bonded to the phosphor bronze wrap wire and then wound onto the hex-shaped core wire. The result is a barrier against corrosion and a consistent, long-lasting tone. And thanks to the corrosion resistant packaging, the strings are always fresh. The string gauges in this acoustic string set include: String Gauges: Plain Steel .013, .017, Phosphor Bronze Wound .026, .035, .045, .056 Since 1905, D?Addario has been providing artists and players with the tools they need to perform their magic. As musicians ourselves, we have the unique ability to engineer products that inspire other musicians. The D?Addario family?s vision, creativity, passion and tradition have made us the world?s largest musical instrument string manufacturer. We put our family?s heart, soul and love for making music into every string and instrument accessory we create, and we never stop inspiring performance.From the ManufacturerEXP17s offer heavier tension resulting in a bolder, more resonant acoustic tone with higher resistance for heavy strumming and flat-picking. D'Addario EXPs are the most natural-sounding, longest-lasting coated strings available. EXP Coated Technology starts with the highest quality wrap wire materials, precision drawn and micro-coated on our advanced proprietary machinery. Strings are then wound normally, delivering tone and feel identical to D'Addario's world renowned acoustic strings, with a minimum of 4 times more life. You won't believe they are coated!D'Addario, the world's largest manufacturer of musical instrument strings, is known as The Players Choice with a reputation for unsurpassed quality and consistency. D'Addario's innovative packaging reduces waste and provides protection from corrosion. All D'Addario strings are manufactured in the U.S.A. using proprietary, digitally controlled, state-of-the-art machinery for unmatched performance, set after set.