Uni Thread is comprised of strong, continuous polyester filaments.
The properties of this thread allow it lay flat on the hook or can be "twisted" tight by spinning the tying bobbin.
The 6/0 (130 Denier) is used for general tying of streamers, nymphs and dry flies.
The 6/0 thread is extremely strong for its diameter.
These threads come on spools containing 200 yards of material.