Product DescriptionPursue your passion with the world?s most popular choice for nylon string players and D 'Addario's best-selling pro-arte set, the nylon classical strings set. Pro-arte strings combine high quality materials with the unparalleled manufacturing consistency of D 'Addario, creating strings that have the versatility required to play today?s advanced repertoire. Every player can experience a balance of volume and comfortable resistance with warm, full-bodied tone and consistent intonation. d?addario leverages centuries of string-making experience and advanced computer-controlled winding technology to bring you the most durable, consistent and long-lasting guitar strings. Made in the USA for the highest quality and performance, Only D 'Addario strings are sealed inside and out. To ensure that each string is made with precision, Each nylon treble within a pro-arte set is laser measured to calculate diameter and tension levels to deliver pure intonation and tonality every time. Pro-arte strings use a unique silver-plated copper winding on a proprietary multi-filament nylon core to create the basses to blend warmth and projection perfectly into one set. With the full set, players can achieve the balanced performance They are seeking. And thanks to the environmentally, corrosion resistant packaging, The strings in this 3-pack are always fresh. The gauges in this classical string set include: trebles . 0280, . 0322, . 0403, basses . 029, . 35, . 043. 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 ManufacturerEJ45, normal tension, is D'Addario's best selling classical set, preferred for its balance of rich tone, comfortable feel and dynamic projection. Buy 3 sets and save!Pro-Arte, the world's most popular classical strings are D'Addario's premium classical guitar string sets. All Pro-Arte treble strings are sorted by a sophisticated computer-controlled laser machine which performs diameter and tension measurements, ensuring true-sounding, precise trebles in every set. Pro-Arte basses are wound using silver-plated copper on a multi-filament nylon core for consistent and warm, yet projecting tone.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.