Brass knuckles with three sharpened points with handle with eight

Why are brass knuckles considered an effective weapon? Won't their sharp edges dig in the hand of the punch-thrower and hurt/incapacitate them quickly? - Quora

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Three knife handles hi-res stock photography and images - Alamy

Max Knives classic brass knuckles in dark gray aluminum

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Knuckleheads with retractable knife Derespina X71 Wood blade in

Knuckles with retractable knife Derespina X71 in gothic style in