Nymph Head Evolution Stonefly” Tungsten Bead Heads

The Nymph-Head Evolution family represents the next generation of modern tungsten fly-tying beads and flies enabling fly fishermen to tie and fish realistic, fast-sinking and effective, nymph patterns. Small (fits hook sizes: 12-14), Medium (sizes: 8-10), Large (sizes: 4-6) 15-pak