The Superfly Hair Stacker is essential for evening the hair tips of deer, moose and elk. Fly patterns such as bass bugs, elk hair caddis and stimulators all benefit from using the hair stacker to give flies a professional finish. Just clip the hair from the patch, remove any underfur and insert the hair (tip first) into the hair stacker. Knock the hair stacker on a hard surface a few times to even out the hairs. Hold the hair stacker horizontally and twist apart to reveal the evened hair.