Nug Knuckle Knife
Designed to use your finger as leverage, the Nug Knuckle Knife is as useful for common tasks as it is for defense. Combining a heat-treated S35VN steel blade with a G5 titanium body, this rugged tool has an 18mm blade that, thanks to its robust construction and your sure grip, can handle everything from opening letters to cutting tennis balls with ease. It measures roughly 2.2 inches by 1.2 inches and is less than half an inch thick, so it's easily pocketable, and without the blade deployed, will protect your knuckles in the event you need to defend yourself with a fist instead of a knife.