ARTICULATED SHANKS simplify the tying of articulated flies. Attach a ring-eye hook or stinger hook to/from the built-in loop at the back of the shank. Place the built-in loop into your vise jaws and tye the fly. These shanks work perfectly with FISH SKULLS and SCULPIN HELMETS, or any bar-bell eyes. 3-SHANK LENGTHS: LARGE(55mm) (20-shanks)