Adopting a super-strong magnet.Adsorbed perfectly as if it is sucked into the concave by just setting it along the rig.OK even under high winds.Secured firmly to the boat side with the Lark Saouke.A permanent magnet plate that adopts five to 20 super-strong magnets in the crater section for preventing leader line entanglement.The adsorption power is outstanding, which strongly adsorbs hooks and hooked bait close to the crater section.Just lightly throwing the sinker allows smooth line casting without entanglement.Place the ultra magnet on the boat side and tighten the clamp for the Lark Saouke (sold separately).Comes with a sinker box.