Fortress Marine Anchors Complete Anchoring System FX-7. This Complete Anchoring Systems has it all. Two large precision-machined and sharpened flukes ensure that Fortress anchors set fast and dig deep. Unlike others they're easily adjusted from a 32 degree angle for use in sand and clay to 45 degree for soft mud. Unique Mud Palms are included to optimize setting performance in problem soft bottoms. Specifications for Fortress Marine Anchors FX Complete Anchoring System: Manufacturer: Fortress Marine Anchors Condition: New Color: Silver Package Contents: Fortress Marine Anchors FX Complete Anchoring System Fortress Marine Anchors FX-7-AS: Complete Anchoring System FX-7