We've tied a few flies up with Hareline's tapered synthetic quills and think they make some excellent bodies. The small end of the quill is perfectly suited for smaller bodies or bodies that need more segmentation. The large end is perfect for bigger flies. The light adhesive on back of the quill helps keep things tight when wrapping the material around a thread body. With a coat of UV resin (such as Solarez Bone Dry) things start looking pretty real. Shop approved!