Newly developed CANTIGA PREMIUM material for the bass strings;These are combined in 3 different series with the treble strings of the NEW CRISTAL, the CREATION CANTIGA or the ALLIANCE CARBON and are available in 3 gauges each;NEW CRISTAL CANTIGA PREMIUM: NEW CRISTAL trebles (first-class, clear nylon strings for unique brilliance and sound projection) in combination with CANTIGA PREMIUM bass strings;510CRP New Cristal Cantiga Premium normal tension;e1: 0.73 mm/.029", 7.2 kg/15.89 lbs;h/b2: 0.83 mm/.033", 5.5 kg/12.14 lbs;g3: 1.03 mm/.0405", 5.6 kg/12.36 lbs;d4: 0.74 mm/.030", 7.2 kg/15.89 lbs;A5: 0.86 mm/.034", 6.5 kg/14.35 lbs;E6: 1.09 mm/.043", 6.6 kg/14.57 lbs;Set tension: 38.6 kg/85.2 lbs;