These stainless steel shanks simplify making articulated streamer and intruder flies. They can be used as a simple component in different styles of articulated flies or for streamers that use a free-swinging stinger hook. Can be used in place of Partridge Double Waddington Shanks. Designed to be used with size 4 hooks and larger, compatible with Fish Skulls (SM, M or L) and large Sculpin Helmets. 20 per package.