Double bead weighted Twenty Incher nymph fishing flies are one of the hottest fly patterns on the river Double bead fly fishing nymph flies for getting deep in the water column quickly Excellent trout, bass or steelhead fly fishing flies. Perfect as a dropper fly under a Hopper or Indicator Fly Pack of 6 - 20 Incher Fly Fishing Nymph Flies - Hook Size 10 Essential on freestone rivers where stonefly nymphs are an important trout food. Double bead weighted Twenty Incher nymph fishing flies are one of the hottest fly patterns on the river