An innovative lockback mechanism makes the SOG Twitch II Lockback Pocket Knife one of the handiest high-performance pocket knives you can get your hands on. The Twitch II combines SOG's S.A.T. blade opening assistance technology with a specially designed blade ″kick″. By pressing on the ″kick,″ one is able to initiate the opening of the blade. S.A.T. then takes over to finish opening the AUS-8 stainless steel blade and securely lock it out for use. The durable blade has undergone SOG's Cryogenic Heat Treatment to toughen the steel and help the blade hold its edge longer. The hard anodized machined aluminum handle features a handy money/pocket clip. Weight: 2.6 oz. Overall length: 6.2″. Manufacturer model #: TWI-8. Innovative design Special ″kick″ on blade fits through pass-through lockbar - activates S.A.T. system AUS-8 stainless steel blade Satin finish Straight edge Cryogenic heat treatment - tougher blade holds edge longer Hard anodized machined aluminum handle Reversible money/pocket clip Dedicated to producing quality products that stand up to extreme conditions since 1986, SOG makes knives with superior sharpness, styling, feel, and balance. With innovative design, precision engineering, and superior construction, SOG brings you high-quality knives that fit your everyday needs and serve military forces around the world. Built to hold exacting tolerances and tough enough to split bullets, you can trust a SOG knife to deliver every time you reach for it.SOG Assisted Technology™ (S.A.T.) provides easy 1-handed opening action that's so easy, it's addictive! SOG utilizes opposing high-tension coil springs to propel the blade open once someone starts the blade out. This opening action is so easy you can do it equally well with your less dominant hand, an option that comes in handy when in the middle of a tough task.