Nymph Head Evolution Caddis Tungsten Bead Heads redefine the head-to-body proportion you need to imitate a caddis pupa. The Evolution Caddis bead is designed with the right size, proportion, shape and colors to reproduce the classic small head, large body silhouette that fly tiers seek. By enabling a smaller bead to fit onto a larger hook, it achieves the correct head/body ratio and profile that standard round beads cannot provide, giving you a true caddis pupa look. The bead tilts forward on the hook and points downward, mirroring the head-arched-down posture of a curved caddis pupa and creating a lifelike silhouette as it moves through the water. The bead's geometry supports natural movement and improved tracking in current, making it a reliable choice for nymph patterns. Designed for use in standard fly tying workflows, it integrates with common hook sizes and thread gauges. Tungsten bead material delivers weight and a consistent sink rate for rapid submersion. Finish and color selection mimic natural caddis pupa coloration. Compatible with typical fly tying setups and a range of hook sizes. This combination of weight, geometry and coloration helps patterns track true in fast water and present a lifelike profile from strike to finish.

• Precisely shaped to produce a small head on a larger body for authentic caddis imitations
• Forward-tilting geometry creates a downward-facing head profile on a curved body
• Tungsten bead weight delivers a consistent sink rate for rapid submersion
• Bead geometry supports natural movement and improved tracking in current
• Compatible with standard fly tying workflows and a range of hook sizes