500 PR, standard tension, red;Trebles: Rectified Nylon of the 520R set of the Traditional Concert Series, Basses: Corum, silver-plated wound.;e1: 0.7 mm/.028“, 6.9 kg/15.23 lbs;h/b2: 0.82 mm/.032“, 5.4 kg/11.92 lbs;g3: 1.02 mm/.040“, 5.4 kg/11.92 lb;d4: 0.75mm/.0294“, 7.5kg/16.57bs;A5: 0.86mm/.0338“, 6.5kg/14.37lbs;E6: 1.11mm/.0437“, 6.5kg/15.15lb;