Hareline Flat Lead Wire is a dense, low-profile fly tying material designed to add weight to nymphs, streamers, stoneflies, wet flies, and other subsurface patterns without creating unnecessary bulk. Unlike round lead wire, the flat profile lies smoothly against the hook shank, helping fly tyers build cleaner underbodies, slimmer silhouettes, and more controlled tapers.
This flat lead wire is especially useful when you need a fly to sink faster while still maintaining a natural shape. It can be wrapped side-by-side for even weight distribution or overlapped to create segmented, tapered bodies on larger nymphs and streamer patterns. The flat shape also helps reduce rolling and twisting while wrapping, making it easier to keep the wire positioned exactly where you want it.
Hareline Flat Lead Wire is a great choice for fly tyers who want added weight without a bulky, uneven body. The flat construction makes it easier to build smooth underbodies and helps materials lay cleaner over the top. It is especially useful for stonefly nymphs, weighted streamers, jig-style patterns, and deep-sinking trout flies where profile and sink rate both matter.
Hareline Flat Lead Wire is ideal for tying weighted nymphs, stonefly nymphs, streamers, wet flies, jig flies, Czech nymphs, Euro nymphs, leech patterns, and deep-sinking trout flies. It is especially helpful when building patterns that need extra weight while keeping a slim, clean profile.
Wrap the flat lead wire directly onto the hook shank before building the body, then secure it with thread wraps or a light coat of adhesive if needed. Use shorter wraps for subtle weight or longer wraps for a faster-sinking pattern. For tapered bodies, overlap wraps slightly toward the thorax or head of the fly.
Low-Bulk Flat Profile - The flat shape sits smoothly along the hook shank, reducing bumps and helping create cleaner fly bodies than traditional round lead wire.
Dense Weight for Fast Sinking Flies - Adds effective weight to nymphs and streamers so flies can get down quickly in deeper runs, faster current, and technical subsurface water.
Great for Tapered Underbodies - Can be wrapped evenly or overlapped to form smooth tapers, segmented bodies, and shaped profiles on stoneflies, streamers, and larger nymphs.
Anti-Roll Wrapping Control -The flat geometry helps resist twisting around the hook shank, giving tyers more control during placement and wrapping.
Versatile Fly Tying Use - Works well under dubbing, chenille, synthetic bodies, wire ribbing, thread wraps, and other materials used on weighted fly patterns.
