The EJ65T Tenor Ukulele sets is an all-nylon string set inspired and guided by the virtuosity of D'Addario ukulele artist, Jake Shimabukuro. Each string is manufactured on D'Addario's own advanced monofilament extrusion line built exclusively for the production of musical instrument strings. Each set features our exclusive laser sorted Pro-Arté clear nylon trebles for unsurpassed intonation with a warm, projecting acoustic tone.