Nymph Head Evolution Tungsten Bead Heads deliver fast sinking and a realistic head profile for Mayfly Clingers & Crawlers. These beads are part of the Nymph Head Evolution family, molded in the shape, size and natural color of the heads of the three most common aquatic insects: mayflies, stoneflies and caddis, with a focus on mayfly nymph patterns. Designed for fly tyers seeking a precise imitation of clinger and crawler mayflies, the head features a flat, broad silhouette that looks compact when tied in on the hook. The profile emphasizes prominent eyes and a curved contour to enhance underwater presentation.

• Fast sinking tungsten construction for quick depth control
• Flat, broad head profile with a squashed silhouette for realistic nymph heads
• Prominent eyes for lifelike anatomy
• Natural color options to match body tone (brown and black)
• Sizes range from X-Small to X-Large, matching hook sizes 16-18 through 8-10
• Pack of 15 beads per pack

For anglers targeting mayfly nymph realism in streams and rivers, these beads provide a consistent, anatomically correct head that improves pattern fidelity and sinking behavior.