RC Strings have been popular in Spain for many years. A limited production line of "boutique" strings, they have been used by Tomatito, Oscar Herrero, Carlos Bonell, Edoardo Catemario.
RC Strings UXB90 Ukulele Strings Excel Baritone, Full Set
RC Strings baritone ukulele strings made of titanium. Full 4-string set.
For Standard Tuning: D G B E