This complete mushroom anchor kit comes with a 5/16" x 50' polypropylene anchor line and stainless steel hook. Mushroom style anchors are best used for small boats anchoring in a silt or mud bottom. They also work well for mooring or racing buoys. To achieve maximum holding power, these anchors need to bury themselves in mud or silt to the point that they displace their own weight in seabed material. The anchor's vinyl finish provides hull protection and makes it easy to handle.