These kubotans are forged from aircraft aluminum and textured to provide a perfect grip. These are also compact, measuring out to 4 and a half inches overall. They are perfect for a customer's purse, pocket, belt, or keychain. The blades are two and a half inches long and are hidden from the naked eye. This is a great self-defense stealth knife with a hidden blade. The blade is stainless steel and super pointy. Just unscrew the jabber section of the kubotan and insert the opposite end inside to have a perfect knife at your disposal.