Designed for use with really big baits to. catch really big fish. Ideal for larger cut. baits used for big Catfish, Sturgeon and. Halibut. Gamakatsu's big river bait hook features a unique shape and large gap are designed to optimize hook penetration and hold fish more securely once hooked. The Gamakatsu big river bait hook is forged for unparalleled strength with a turned-up eye for easy and effective snelling.