Knuckleduster is a term used to refer to a type of weapon that consists of a metal plate with four finger holes. It is lethal and often used in street fights or brawls. Other terms used to describe knuckleduster are brass knuckles, knuckle dusters, knuckles and knucks. These terms essentially describe the same kind of weapon, and they all have a similar purpose, which is to inflict pain and injury on an opponent. In some countries, knuckledusters are illegal, and possession can lead to arrest and prosecution. The use of these kinds of weapons is dangerous and unnecessary, and individuals are advised to avoid them.