finger holder/punch/iron four-finger iron fist iron finger brass knuckle brass knuckles hand buckle

Function: Iron Fist, also known as Iron Four Fingers, is worn on the hand for combat to dramatically increase the power of the punch, capable of knocking out an opponent with a single blow. This product features oval-shaped finger holes with a smooth and shiny surface. The material is extremely hard, capable of breaking through dozens of bricks without any damage. Even a weak scholar who cannot even hold a chicken can knock out the opponent's teeth with a single punch after wearing it. Suitable for all adults.