Aquila 1CH Charango 10-string Set (in octave), Medium Tension (synthetic gut) have the same acoustic properties as gut - but without its typical defects - (high cost, limited duration and high instability under varying climatic). Nylgut has precisely these qualities: allowing one, on the one hand, to rediscover the sonorities familiar to the great 19th and 20th century masters; and guaranteeing, on the other, a stability of tuning higher even than that of the best gut and nylon strings. Set 1CH / Charango 5-course ee''-a'a'-ee'-cc-g'g' (in octave)Made ofSUPER NYLGUT monofilament, gut-coloured (brownish)Medium TensionUntil the 1950's, only gut strings were used for the Charango, Ronroco, Timple Canario, and the Cuatro, in which the quickness of the answer was joined with the brilliance of the tones, being the sound very different with respect from the present nylon cords.SUPERNYLGUT is theupgraded version of Aquila's famous Nylgut strings. The synthetic material Super Nylgut