When using keys as a striking tool, what specific grip, other than simply holding them in your fist, maximizes the force and precision of the strike?

When using keys as a striking tool, the specific grip, other than simply holding them in your fist, that maximizes the force and precision of the strike is the 'icepick grip'. This involves holding the keys with the key ends protruding between your knuckles, effectively turning your fist into a makeshift stabbing weapon. The keys are held tightly in the palm with the thumb and fingers wrapped securely around them. This grip aligns the force of the strike directly behind the key tips, concentrating the impact and increasing penetration, while also providing stability and control for more accurate targeting. This grip allows for a more focused and damaging strike compared to simply holding the keys loosely in the fist.