LaBella OU80A Arabic oud strings. This set is designed for floating bridge ouds, commony strung FAdgc'f'. Note that the g is plain nylon, not wound, and this set does not come with a low C bass string.
If you want to use C to c' tuning or have a 7-course oud, you can add the individual LaBella string: .043in would be typical, but if the oud is very short (57-58cm) .044 might work better.