Brass Knuckles Brass Knuckles, or some variant of the knuckle duster, have antecedents from all over the ancient world, including the Roman Caestus, Indian Vajra Mushti, and Japanese Tekko. Brass knuckles allow for harder punches by protecting the knuckles, providing a harder contact surface, as well as adding mass to the fist. We offer belt buckles in the traditional brass knuckle design, which may also be used as a conversation piece or paper weight.
