The Articulated Shank is an innovative, new fly tying material designed to simplify the tying of articulated flies.It can be used as a simple component in different styles of articulated flies such as single hook and two hook articulated streamers, poppers and sliders. It is also used for streamers that use a free swinging stinger hook such as Intruder style salmon and steelhead flies. Easy and fast tying process. Increases tail action. Increases the overall fly length. Reduces the leverage a hooked fish typically places on a fly. Eliminates the need to sacrifice a hook to make a shank. Three shank lengths (20mm, 35mm and 55mm), 20 Shanks per pack, typically for streamer flies 7.5cm and longer, wire diameter fits hook sizes starting from about 4 up to 3/0, will fit the Fish Skull (SM, M and L sizes) and the Fish Skull Sculpin Helmet, The high strength stainless spring steel shank can be used in saltwater.