Assisted opening system built into the Ken Onion Knife. SpeedSafe assists the user to smoothly open the knife with a manual push on the blade's thumb stud or Index Open system. (Index Open uses a protruding portion of the blade's finger guard to give the user an alternative to thumb stud. The user manually pulls back on the protrusion with the index finger to pen blade.) The heart of the SpeedSafe system is it torsion bar. Closed, the torsion bar helps keep the knife closed, preventing it from being opened by gravity. In order to open the knife, the user must apply manual pressure to the thumb stud to overcome the resistance of the torsion bar. After the blade is out of the handle, the torsion bar moves along its halfmoon track and takes over. Blade opens smoothly and locks into position, ready for use.