S.A.T. (SOG Assisted Technology) propels the blade out once the operator has initiated the one-handed opening action. World-famous designer Spencer Frazer: "I had this idea that I could devise a whole new technology to help open a knife blade quickly and easily." 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!). We warn you...this blade action is addictive! Play with it once, and you’ll be opening it again and again!