A "stable fall" that is effective for tough-to-catch squid. Hydrofin: Stabilizes the fall position of squid caught through squid fishing so that it doesnt feel uncomfortable to difficult, big or inattentive squid.Shallow model: For shallow captures, the sinking speed is sure to attract inattentive squid.Active Balancer: Not only does it stabilize the position in shallow water, which tends to rise up, but it also solves the smallness that is the weak point of the Shallow model. We’ve pursued moderate action to avoid alarm inattentive squid.