MUUNN Brass Dumbbell Eyes Fly Fishing Tying Nymphs 3.2mm~5.0mm,Trout Bonefish Bluegill Lure Hooks

Dumbell eyes add weight to a streamer pattern, plus they allow the fly to ride hook-upward and impart a jigging motion when you strip line. They also tend to rotate around the hook shank, ruining both the fly’s profile and motion in the water.