Orvis Mission Textured Tip Kit Sinking Fly Fishing Line - Mission Sink Tips are designed to be used with Skagit heads. These tips allow you to select your preferred sink rate to best present your flies at the desired depth. The tips are dual density, to avoid a hinge in the line for better contact with your flies. The tips are also tapered for the best transition of energy through the tip. They are offered in three different lengths/grain weights and three different sink rates.