Long-distance cast iron plate. The long-distance cast iron plate is suitable for throwing and the water layer is stable, while the falling iron plate is not suitable for throwing and will slowly sink to the bottom of the water. In order to adapt to the habit of Spanish mackerel chasing pelagic bait, lead fish fishing needs not only the ability of long-distance throwing, but also different postures in the set water layer, so it is required to have the characteristics of suitable throwing, stable water layer, beautiful swimming posture, strong visual stimulation and simple operation, so it is necessary to use long-distance throwing iron plate.