Have you ever picked a punch onto someone who was trying to scare you? Have you had the power to subdue a violent person to save yourself? If not, then you should know how to do that, while protecting your own hands along the way. Brass knuckles are and always have been the best way to do that, to keep the power and safety intact. For those of you who have never used them before, brass knuckles are basically shields for your hands when you punch hard. They were invented centuries ago and are still in use because they are a straightforward technology. Hard-hitting metal, with sturdy metal rings that protect your hand and pack a punch, that’s a true double trouble weapon.