Fortress Marine Anchors 18lb Guardian Anchor f/42'-47' Boats. These anchors are manufactured from the same corrosion-resistant high-tensile aluminum magnesium alloy as Fortress which makes them stronger and lighter than competitive steel anchors.With Guardian anchors several Fortress machining steps and extra features such as anodizing and adjustable fluke angles are eliminated. The Guardian Anchor is limited to one single 32-degree angle which will work for most common sea bottoms. The result is a high-performance anchor that is engineered for fast setting and strong holding power and a very affordable alternative to those heavy rust-prone steel anchors.As strong as steel but only half the weight Guardian anchors are second only to Fortress FX model in holding power tests. They make an excellent spare or storm anchor for your boat or yacht. Specifications for Fortress Marine Anchors Guardian Anchor: Manufacturer: Fortress Marine Anchors Color: Silver Fabric/Material: Aluminum Alloy Features of Fortress Marine Anchors G-125 65lb Guardian Anchor f/63'-72' Boats Weight (lbs): 65lbs/29kg Construction: Aluminum Alloy Boat Length - Max (Feet): 63'-72' Package Contents: Fortress Marine Anchors Guardian Anchor Fortress Marine Anchors G-37: 18lb Guardian Anchor f/42'-47' Boats G-37