For soprano ukulele (330-350mm scale length) and classical ukulele with 380 mm scale length.;Total length of strings 640 mm;Very balanced string tension made of the legendary Hannabach Goldin Super-Carbon;Very brilliant and warm sound;CARBON strings are very thin and smooth, please tie 1 or 2 knots at the knot bridge to prevent the strings from slipping and damaging the instrument;Colour code to identify the individual strings;Tone / identification / diameter / tensions:;A1 red markings: 0.58mm/.022", Soprano: 4.8kg/10.58lbs, classical: 5.2kg /11.46lbs;E2 green markings: 0.70mm/.028", soprano: 4.4kg/9.70lbs, classical: 4.8kg/10.58lbs;C3 black markings: 0.87mm/.034", Soprano: 4,4kg/9.70lbs, classical: 4,8kg/10.58lbs;G4 blue markings: 0.61mm/.024", Soprano: 4.4kg/9.70lbs, classical: 4.8kg/10.58lbs;No single strings available. We recommend replacing the set completely to ensure a consistent sound;