J:son Tungsten Stonefly Nymph 4 Black #12 Barbless Segmented Body Featuring J:son’s hallmark anatomical wings

Featuring J:son’s hallmark anatomical wings and a realistically segmented body

Handling: Oversized hook eye for easy threading with thicker tippets

The "Winter Stone" Specialist: Many small stonefly species hatch during the coldest months

Whether you are tying for a selective trout in a crystal-clear stream or a heavy stonefly hatch

J:son Tungsten Stonefly Nymph 4 Black #12 Barbless Segmented Body Featuring J:son’s hallmark anatomical wingsStonefly Nymphs The Year Round Secret Why Stonefly Nymphs are a must have: Protein Power: These nutrient rich nymphs are a primary food source for trout and grayling all year long. Easy Targets: As poor swimmers, they often lose their grip and drift downstream, becoming an effortless "snack" for waiting fish. Bottom Dwellers: Unlike many insects, they don't swim to the surface to hatch; they crawl to the shore. This keeps them in the "strike zone"