Combination of NEW CRISTAL nylon treble strings with the traditional HT classic basses;540CR normal tension, red stripe;Treble: New Cristal Nylon blank, Bass: HT Classic silver-plated wound;e1: 0.73 mm/.029", 7.2 kg/17.22 lbs;h/b2: 0.83 mm/.033", 5.5 kg/12.80 lbs;g3: 1.03 mm/.041", 5.6 kg/12.58 lbs;d4: 0.74 mm/.029", 7.2 kg/16.46 lbs;A5: 0.86 mm/.034", 6.4 kg/15.305 lbs;E6: 1.09 mm/.043", 6.5 kg/15.23 lbs;Set tension: 38.4 kg/84.86 lbs;