Simplify tying articulated flies and stop sacrificing extra hooks using these Fish Skull Articulated Shanks. Use them as a single component in different styles such as single-hook and two-hook articulated streamers, poppers and sliders. They are also ideal for streamers that use a free-swinging stinger hook, such as Intruder-style salmon and steelhead flies. Articulated shank increases tail action and overall fly length, while reducing the leverage a hooked fish places on a fly. The high-strength, stainless steel spring shank can be used in saltwater. Wire diameter fits hook sizes from #4 to 3/0. Fits the Fish Skull (S, M, and L sizes) and the Fish Skull Sculpin Helmets. Per 20. Sizes: 20mm, 35mm, 55mm. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Articulated Shanks.