Worth Premium Package Concert/Soprano 23''/21'' Ukulele String Brown Color Japan Worth Original Package Ukulele Brown Color Strings. Length: 46 inch/string. Can Be Cutted into 2 sets Strings. Material:Fluoro-Carbon Worth String Has Two Color Types. The Brown Color Strings Have More mild and mellow sound than Clear. Clear Color Strings Have More sharp and projective sound than Brown. For Concert/Soprano 23"/21'' Ukulele. Medium gauge is standard for solo and stroke(strumming) play. Shipping: By Air registered parcel Approximately 12-15 days to U.S.A or Europe.*To ensure customer receive our item, all the product need to be signed.*