The Kershaw PackRat Knife Features SpeedSafe w/Index Opening
1665 - PackRat from Kershaw and Ken Onion, Textured black G-10 overlay Handle, Plain Edge Blade
SpeedSafe®, the patented, assisted-opening system built into many of Kershaw's best-selling Ken Onion knives. 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 the thumb stud. The user manually pulls back on the protrusion with the index finger to open the blade.)
The heart of the SpeedSafe system is its 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. The blade opens smoothly and locks into position, ready for use.