Arch head transmits underwater information.The cup-shaped head grips the water, making it easy to grasp the trajectory and range even in night games with poor visibility. Because it has a low center of gravity structure, the hook always faces upward, making it difficult to get caught and supporting hooking to the upper jaw. The hook is flat and resistant to elongation and deformation, and has a double nickel finish that is resistant to rust. Also, by combining with APIA Pronto, wobbling action is activated and appeals greatly to the target.