Designed by custom knife maker Rick Hinderer, the Zero Tolerance 0393GLCF features a Carbon Fiber overlay that glows in the dark; take it into a darkened room and you’ll see a soft, green glow coming from the Carbon Fiber The 20CV blade steel provides superior hardness and corrosion resistance, along with toughness, wear resistance, and excellent edge retention; the flipper is designed for easy opening with the KVT system 3. 5-Inch blade is a harpoon-style version of Rick hinderer’s “span to” blade; The shape offers maximum cutting power with a sturdy tip for piercing