Why is it called automatic flip hook?

Fish have the habit of repeatedly swallowing and spitting out fishhooks to test the danger, and the present invention is developed for fishes who like to spit out hooks. Double-width rounded corners, flat hook entrance, the hook automatically flips when the fish closes and opens the mouth, so that the hook tip can penetrate the fish mouth, thus realizing automatic fish stabbing

ATTENTION!

Please allow manual measurement error. Thank you for your understanding.