Spiked knuckles

 are a set of unarmed weapons in Fallout, Fallout 2, and Fallout 3.

Fallout and Fallout 2
The spiked knuckles can be acquired very early in the game - the Dunton Brothers each have a set to steal, and wield a second set in combat. If the player chooses to kill them, they can acquire four sets of Spiked Knuckles.

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