The Picasso Shakedown Jig Heads use a flexible nickel titanium spring bait keeper, along with a cross-eye Gamakatsu hook. The flexible nickel titanium spring always comes back to position after each fish without breaking. Because of its super soft elasticity, the spring allows the entire hook gap to be maintained during hook set. The “give” of the spring allows anglers to lock down and shake their plastics in cover or skip docks without ever losing or tearing the soft plastics. Because of the spring’s small size, finesse worms (such as Roboworms or other thin hand poured plastics) can be rigged very straight with no “hump.” It also prevents the plastic from tearing. These heads are coated with the super tough Duraseal™ process, increasing the sensitivity and allowing them to hold up under rough conditions.