-16 & 20lb for boats 18' or longer and pontoons. 
Heavy duty anchor with gussets welded into place to strengthen flukes, has 1/4 log chain for securing to boat.  Patened quick release system to easily getting free of snags. 
-Cat River Anchors have a patented release system with over 9 years in business with a very good retrieval and hookup rate.
Cat River Anchors by MondoCat