Almost everyone has heard of 'brass knuckles.' You've heard about them in TV, movies, and almost any other pop culture related area. Knuckle dusters have a long and storied history. Some say starting with the Romans.
At afk3D, our knucks' are 3d printed out of various materials. They are just as reliable and heavy hitting as their metal cousins. Our knucks' are designed for simplicity, easy of use, with a focus on self-defense.