Senyo's Intruder Trailer Hook Wire Thin - Black.
Senyo has tested this wire, doubled over like you'd tie it on an intruder, at over 50lbs tensile strength. It is stiff enough to hold your hook in the right position without fowling. Also is perfect for tying barracuda and shark leaders, and is especially good for tying articulated flies. Each package contains 4 yards of material.