Custom made River Anchor. These anchors are made one at a time by a private party out of heavy duty steel for use on rocky rivers such as the Upper Delaware and Susquehanna. They will hold you when a standard anchor will not. They also have a slide channel that allows you to release your stuck anchor from the opposite direction if needed. The slide channel is a great feature. I have seen similar anchors referred to as "Reef Anchors". This anchor has some surface rust from sitting around and not being used for several years. After a little use the rust will get worn off. The anchor measures 20" High and 20" Wide at the base. I'm not interested in trades.