For excellent holding power, cast iron or steel mooring anchors such as these pyramids are far superior to granite or concrete blocks. - Pyramid shaped one-piece cast iron permanent mooring/anchor for fresh and salt water use
- Mooring will rapidly set itself by presenting a digging edge to penetrate the bottom
- Short shank allows mooring in more shallow water with less chain wrap-up and potential hull damage
For excellent holding power, cast iron or steel mooring anchors such as these pyramids are far superior to granite or concrete blocks. When underwater, concrete loses nearly half its weight and granite loses over a third. The digging properties of pyramid anchors in mud bottoms increase their holding power. | 
