The Elk Hair Caddis is a proven Fly that produces when it comes to catching fish. Resembles a Caddis Fly or Stonefly Sizes available are 14, 16, 18. Also a combination of mixed sizes, 14, 16, and 18 (4qty of each size) High Quality Flies 1 Dozen Flies The Elk Hair Caddis is one the favorite dry flies commonly used for trout fishing. The Elk Hair Caddis is considered a searching type pattern as it resembles the general form of adult caddisflies or small stoneflies. Sizes available are 14, 16, 18 and a combination of all 3 sizes