The Cuda Marine Knife & Hook Sharpener (18219) is a USA-made, dual-sided tool featuring fine and extra-fine diamond-coated surfaces for precise sharpening of knives and hooks. Its rust-proof construction and folding handles protect the diamond surfaces while offering a dedicated hook sharpening groove, making it ideal for marine environments and ensuring long-lasting sharpness for your gear. This sharpener can be used dry or with water, eliminating the need for messy oils.