The Articulated Shank is a Fish Skull product. Innovative new fly material designed to simplify the tying of articulated flies. These can be used with the Sculpin Helmet or as a single component in different styles of articulated flies such as a single hook and two-hook articulation streamers and poppers. These can also be used for streamers that use a free swinging stinger hook such as an intruder style salmon and steelhead flies. Sizes; 20mm (3/4″), 35mm (1 3/8″), 55mm (2 1/8″). Item# 10158