This is an ajing worm with twin tails that entices horse mackerel with subtle vibrations. This worm is effective for horse mackerel that prey on plankton such as krill, shrimp, and small squid. Includes 5 each of 4 colors: yellow, luminous white, pink, and gold. Please consider purchasing if you are interested. Size: 40mm Material: Soft plastic Target: Horse mackerel, rockfish, barracuda, jack, mackerel, scorpionfish, rockfish, rockfish, grouper, fat greenling, rockfish, etc.