The Flash line of folders debuted SOG's new patent pending S.A.T. (SOG Assisted Technology). This mechanism helps propel the blade open once the operator has initiated the one-handed opening action. They're as fast as lightning, safe, and provide an extremely strong blade lock. This opening action is uniquely different from all others with a fast start and a power curve throughout the movement of the blade. When closing the blade into the handle you actually feel as if you are cocking a side arm as the blade is held securely inside the handle. 3.5" Blade 8" Overall 3 oz Stainless Steel.