SOG® Twitch II Folding Knife.
Looking at the intricate construction of the Twitch II might remind you of the workings in a fine chronograph watch; everything right and precisely in its place. These techno wizards feature a pass-through lockbar (patent pending) from which the "kick" of the blade sticks through. By pressing on the "kick", one is able to initiate the opening of the blade. S.A.T. (SOG Assisted TechnologyTM) then takes over to finish opening and to securely lock the blade open. What makes these space-age little gems even more beautiful is that they are also affordable!More on S.A.T.: SOG Assisted Technology works through the balance of opposing high-tension coil springs. As one opens the blade the force to propel the knife open becomes greater than the closing force and the blade will open on its own. The end result propels the blade out once the operator has initiated the one-handed opening action. S.A.T. works so well that right-handers can use their left hand equally well to open a folding knife (of course this works oppositely for lefties).