The DUO Tetra Works Deliy is a uniquely shaped worm designed specifically for mackerel fishing. Its flat body offers versatile presentations, whether vertical or horizontal, allowing you to adapt to different fishing conditions. The bulky design enhances water reception, while the back section is shaped for easy suction and improved hooksets. A standout feature is the unique tail fin, which provides subtle movement during retrievals and stays still during pauses, perfectly mimicking the natural feeding behaviour of fish.