Completely new development of the CANTIGA PREMIUM bass string material These are available in 3 different series with NEW CRISTAL, CREATION CANTIGA or ALLIANCE CARBON treble strings and are available in 3 different voltages NEW CRYSTAL CANTIGA PREMIUM: NEW CRISTAL treble strings, premium transparent nylon strings for unique brilliance and sound projection. CANTIGA PREMIUM Bass Strings CANTIGA PREMIUM ALLIANCE ALLIANCE CARBON treble strings for unique brilliance and sound projection. CANTIGA PREMIUM Bass Strings 510ARP Normal Voltage e1: 0.62mm / .024 ", 7.9kg / 17.44lbs h / b2: 0.69mm / .027 ", 5.9kg / 13.02lbs g3: 0.84mm / .034 ", 5.8kg / 12.80lbs d4: 0.74mm / .030 ", 7.2kg / 15.89bs A5: 0.86mm / .034 ", 6.5kg / 14.35lbs E6: 1.09mm / .043 ", 6.6kg / 14.57lbs Game Tension: 39.9kg / 88.07lbs