Adding some extra flare to a tried and true formula, the Berkley Fusion19 Underspin refines the traditional jig head with the addition of a miniature willow blade for enhanced attraction. Attached to a ball bearing swivel positioned under the head, the spinning willow blade on the Fusion19 Underspin is designed to provide a subtle flash and vibration that could make all the difference in the effectiveness of your presentation. With a 90 degree line tie, these underspin jig heads are ideal for use in both vertical jigging or cast-and-retrieve applications. The conical bait keeper securely locks the fluke, swimbait, or other soft plastic of your choice firmly in place, while the rugged fusion19 hook features a razor sharp needle point for quick penetration and perfect hook sets.