Aquila 6u - Single String - Soprano Low G Tuning G4 (Wound) single string / Soprano Ukulele (4th) g - New NYLGUT-core/ silver-plated woundLow G tuning (string is tuned 1 octave lower)String length: approx. 60 cm Fits for the string set 5U (Low-G/ GCEA)