The Hitotsu Tenya FD consists of a multi-layered plan with a hydrodynamic shape that allows for quick sinking. The small hooks are popular due to their piercing ability, following a natural motion for catching fish. The head sinks first, followed by the tentacles and the bait. The Tenya has many sides and angles, offering volume from every perspective. They are ideal for shallow areas, with a low center of gravity, remaining on the bottom for a longer period of time.