Kershaws Leeks offer Ken Onions distinctive design as well as the SpeedSafe ambidextrous assisted opening system. With SpeedSafe, you can smoothly and easily deploy the blade with one hand, either left or right. All Leeks include a safety tip-lock and a reversible/removable pocket clip. SpeedSafe Assisted Opening. Frame Lock. Thumb Stud. Pocket Clip. Small and lightweight.