Put the field-proven EChip to the test! The Pro-Troll E-Rotary Bait Holder secures your bait with ease, and its built-in EChip replicates and sends out the voltage discharged by the nervous system of a living fish. Why is that important? Using natural electro-location, predatory fish key in on this natural signal and use it to locate and close in on smaller fish. If that's not enough, this microchip has been scientifically proven to attract a wide variety of gamefish in all kinds of conditions. The head springs on the Pro-Troll E-Rotary Bait Holder open for easy loading, the slide lock clamps down hard for positive baitfish grip, and the diagonal fin on the back creates strike-inducing erratic actions. Also great for bait strip presentations. EChip attracts predator fish from a distance Replicates the voltage discharged by a living fish Proven to attract a wide variety of gamefish Bait Holder secures your bait with ease Diagonal fin creates erratic action Head springs open for easy loading Slide lock clamps down on bait