Guitar strings were originally made with animal intestine and silk wound with animal intestine until World War II , when war restrictions led Albert Augustine to develop nylon strings. Nylon strings were put in production in 1948. With the years, strings have been developed to materials like nylon, metal, nickel or fluorocarbon polymers. As the instruments evolved also strings did. With the technology we got strings more resistance and with a better sound . Strings are a vital part for the guitar . In Maderas Barber we offer you a big range of strings . You can choose the best that meets your individual needs.