FX-37 21lb Anchor f/46-51' Boats In test after test, from coast to coast and from around the world, no anchor in history has been called "The Worlds Best Anchor" by more boaters and respected marine experts than Fortress...and for good reason.Years of research and development, high-tech materials and manufacturing and thousands of real world tests are your assurance of performance, quality, and value. Fortress weighs only half as much as heavier steel anchors and yet outperforms them all.Why? Because the Fortress design does not depend upon weight to provide world class performance. All this adds up to your best value in anchoring safety and convenience.FeaturePrecision-machined from an aluminum alloy that is as strong as steel, but only half the weight Can be disassembledLifetime Parts Replacement WarrantyAdjustable 32° to 45° fluke angle Tough anodized finishBenefitEasy to manage weightRustproofSharper than heavy, dull-edged steel anchorsWill set faster and penetrate deeper into common sea bottoms for incredible holding powerExcellent as a spare or storm anchorEasy to storeFree replacement of any damaged anchor part...Forever!*Exclusive feature which dramatically increases holding power in problem soft mud bottomsHandsome and durable appearanceCorrosion resistant*Customer pays shipping and handling costs only.