Button Lock PraxisCivivi's popular knife model, the Praxis, has undergone an exciting upgrade, now featuring an aluminium handle and a practical button lock mechanism. The Civivi Praxis is a generously sized folding knife that's designed to get the job done, and look good doing it. With a 3. 75" 95mm blade and a 4. 87" 123. 7mm handle, the Praxis is sized for hands big or small. It's drop point blade with a tall flat grind makes easy work of any task, and it's