Based on a fly by Robert Mckay this is basically a super heavy nymph used to control the drift of a team of nymphs through fast water, rather than being purely sacrificial the extra movement and flash on this fly means it fishes like a dead drift mini streamer.
Hook: Partridge of Redditch SUJ #10
Weight: Large Tungsten Shrimp Back & 3.8mm Veniard Slotted Tungsten Bead
Thread: Semperfli Nano Silk 12/0 Orange
Tail: Sand Grizzly Mini Marabou
Body: Silver Mini Flat Braid coloured on one side with brown marker
Thorax: Orange and Olive Spectra dubbing