Mini Knuckle OTF Key Chain Knife Small Automatic Switchblade - Carbon FiberKeychain Knuckle Knife OTF (out the front) Automatic switchblade, small fun little keychain knives w Carbon Fiber inlays. Comes in black or gold, and features a durable aluminum construction handle. Spine Switch with a dual action opening and closing push button. It comes with a Single Edge Blade, stainless steel with a sharp edge on one side. Overall 5. 25 Inch Blade: 1. 875 Inch Dual Action D A auto out, and return Aviation Aluminum handle Light