La Bella Has Over 400 Years of String Making Experience The tradition of string making dates back to the 1640s in Salle, Italy, where the Mari family supplied gut strings to the famous violin builders of Cremona. In 1913, brothers Olinto & Emilio Mari arrived in New York bringing their family craft to the States. Over the years, the brothers shaped the landscape of the string industry with their innovative designs. Every set is manufactured using a perfect combination of traditional methods and latest technologies to produce a superior string. 427 Elite - Clear Nylon, Silver-Plated The 427 Pacesetter Elite set contains clear nylon trebles and basses are silver-plated copper wound on a nylon filament core. The prototype for the first nylon classic guitar strings, this fifty year old set design has been the standard and most versatile string construction since nylon strings were developed. The moderately priced 427 set is by far the world's largest selling set of classical guitar strings. Bright tone Tension: Medium String Gauges: Clear Nylon: .028, .032, .040, Silver-Plated Wound: .028, .033, .041 Made in the USA with American Wire Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness