The Tornado Anchor is a new "spin" on anchor systems. Engineered to contour to the river bottom, the revolutionary design of the Tornado Anchor allows more surface-edge contact. This increase in contact area creates more uninterrupted drag, stopping your boat faster. The Tornado Anchor uses a patent-pending design, developed using the latest CAD software. The anchor consists of a series of stacked blades which independently rotate to conform to ever-changing conditions. As the blades rotate, the shape of the anchor changes, allowing more linear-edge surface area to grip and dig into the riverbed.Simply put, the Tornado Anchor works better than traditional lead anchors. Period.