Brass Knuckles

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Metal Fist Gadgets Alternatively, you could also call them knuckle dusters - a type of self-defense weapon that is worn on the hand and consists of a metal structure designed to fit around the user's fingers. These tools are not meant for casual use or as fashion accessories but rather for serious self-defense purposes. Despite their brutal appearance, they can be quite effective when used correctly. However, it is essential to exercise caution when handling them due to potential legal repercussions in some jurisdictions.