Assumes the "dig" position when dropped in the water Patented Digger Action Durable and rust resistant Incredible holding power! Best holding anchor for boats up to 36 ft. and Pontoons. Digs its way into mud, sand, and weeds. Holds boat when anchors twice as heavy would only skid or drag. Assumes the "dig position" when you drop it in the water. A quick jerk on the rope will release the patented Digger Anchor. But wind or boat motion won't cause it to release. Durable and rust-resistant. Adapts to Worth Anchormate® and most other anchor systems.