Construction & Materials 
The star players in the build of this knife are the Elmax powdered steel, and the G10 handles scales. Elmax is super popular right now, and rightfully so—it holds a great edge and it is impervious to most corrosives. G10 handle scales are durable, but they also provide a consistent grip whether wet or dry. Where the Zero Tolerance 0560 shows some signs of struggle is with the frame lock, which can release under pressure.

Ease Of Use 
Having a 5.25-inch long handle puts the Zero Tolerance 0560 into the larger category. In my hand, there is almost 1.5 inches of knife pommel behind my pinky—if I want to be able to rest my hand in the finger choil and rely on the spine jimping to give me more control of the knife. Out of the box, the flipper function is a tight and required some adjusting and White Lighting lubricant. The knife now performs as fluidly as a ballet dancer.

Steel Quality / Edge Retention
Stonewashing Elmax steel and shaping it into a hollow ground, Drop Point style blade creates a knife that reigns supreme in durability, longevity, and universality. I ran this knife through the rope cutting and cardboard slicing tests twice, and it is still razor sharp. I also let the whole thing soak in a cup of unleaded gasoline, but that was just me trying to kill it. I failed.

Durability 
Please refer to the testing and gasoline comments from the “Steel Quality / Edge Retention” section of this review. A Greek god or goddess couldn’t alter this knife. Unfortunately, the fact that the Frame Lock can slip, allowing the blade to close, is a real drawback—as I believe it will only get worse with use.

Value 
The Zero Tolerance 0560 is an expensive knife when compared to other knives of its size and design—but the cost is justified by the materials and construction. At any price, a knife should function properly, in this case, I had multiple instances where the frame lock would slip out of place, causing the knife to close, during testing.