What is knuck?

Knucks, also known as knuckle dusters, brass knuckles, or knuckle busters, are hand-held weapons designed to reinforce the user’s fist. They consist of a metal or hard plastic frame with four finger holes and a set of four metal or hard plastic protrusions that extend beyond the user’s knuckles when worn. Knucks are primarily used in hand-to-hand combat and can cause severe injury to an opponent due to the added force behind each punch. While they are banned in many countries, some allow for possession and use under certain circumstances, such as for self-defense purposes.