The HDO is particularly well-suited for bloodworms, which mimic the red chironomid larva known as the bloodworm. A flexible material wound in a thin layer follows the curve without unnecessarily thickening this slender silhouette. For a leech, a movable tail can extend the body mounted on the hook. The HDO/08 is barbless and features a Black Nickel finish. It is packaged in packs of 20.