Martin offer a high quality set of fluorocarbon baritone ukulele strings, with a aluminium wound 3rd G, and a silverplated copper wound 4th D. Tuning EBGD.
These are very civilised strings, with good balance across all four and decent intonation. Will make a nice bright sound, but with a full, rounded tone on your baritone.
E: 0.0220 inches / 0.56mm
B: 0.0251 inches / 0.64mm
G: 0.0340 inches / 0.86mm
D: 0.0350 inches / 0.89mm