Now I got it,fish have the delicacy to not overlook even the slightest changes in water."HADO" cannot be done with existing lures to stimulate its delicacy It vibrates and invites fish.Specifically, during the fall, it sinks (falls) while disturbing the water flow and emitting fine bubbles.Squeeze the water on the front side, fall while disturbing the water, entangle the water flow on the back side, hold the hook.It will fall while vibrating finely.Width 9 mm ; Hook : Decoy area hook type VII # 12 ; Split ring: Decoy split ring (light class) # 1.