Hareline Core 1730 Stonefly Nymph Hook- This hook was specifically designed to enhance the "natural appearance" of stonefly nymph patterns. In older fly tying recipes, tiers were often instructed to bend the hook shank of a typical 3X or 4X-long hook down, that way the final product exhibits a curved or bent body more closely resembling the actual nymphs which bend between the thorax and abdomen when they free swim. Manually bending a finished hook always compromises the metal and is not recommended. These hooks come pre-shaped for perfect looking stonefly and mayfly imitations and crustacean patterns. Round bend, down-eye, bent down shank, 1X-heavy wire, 3X-long shank, chemically sharpened. 25 packet.