The Ultratech OTF knife by Microtech stands as the flagship knife for Microtech and continually sets the industry standard for out the front knives. This dual action (automatic open and close) knife comes in a variety of blade styles, materials, and finishes. The knife is 4.84" closed and 8.3" open. Built to perform, it also has a spring that remains "at rest" when closed which makes the knife ready to fire when you need it most. This Microtech knife is a knife you can count on.