Roboworm FX Straight Tail Worms utilize their signature robotic hand poured triple color technology, and feature their exclusive 'Salt Release System'. Whereas most worms have salt either just coating the plastic or trapped inside, Roboworm infuses the head of the worm with salt allowing it to leech out slowly during your cast. A burst of salt is released, when a fish bites, so the fish holds on longer, resulting in a better catch ratio. Roboworm's robotic pouring technology creates a cool 3D effect that fish have never seen before. The Bloodline of these worms are poured intermittently, which creates neon color 'dots' splashed throughout the worms.