Zero Tolerance ZT0452CFThe original Zero Tolerance 0454 was an award winning collaboration between ZT and custom knife designer Dmitry Sinkevich. But it was also a very Limited Edition knife. To make this amazing knife more readily available, ZT has created a new for 2015 version based on the originals streamlined form and high performance function. The 0452CF is the same size as the original 0454, but with a carbon fiber front scale and S35VN dual finished blade. S35VN