Abstract: A foldable pocket knife constructed to look like a fine writing pen includes a quick opening blade moved about 180° from the closed to the open position by grasping a pivotally movable portion of the knife handle which moves with the blade as a unit for 180° to open the blade and then continues in its pivotable movement 360° to its original position where its functions, together with a stationary handle portion, as the handle of the knife. The knife blade is closed by moving the moveable portion of the handle in the reverse direction to engage the blade and subsequently move together with the blade as a unit back to the original position adjacent the stationary portion of the handle. Accordingly, the user's hand need not contact the blade in either the opening nor the closing movement thereof.