AQUILA THUNDERGUT UK BASS 4STRVibrating string length: 42-43 cmThe classic A tuning set for Guilele/Guitalele with scale lengths of 17″ (42-43 cm).Consisting of Nylgut trebles and silver-plated copper basses with a Nylgutcore, this set provides a warm, round sound with excellent promptness and acoustic projection.