The Zero Tolerance 0804CF Flipper Knife Carbon Fiber Black Plain Edge. The Zero Tolerance 0804CF is a Todd Rexford collaboration knife based on his popular Gamma custom. It has a large 4" blade made of fine-grained CTS-204P steel. The high-performance blade is tungsten DLC coated with a black finish. It is equipped with a titanium handle that features a black carbon fiber handle scale. The frame lock has a hardened steel lockbar insert that firmly secures the blade during use. A USA Made badge on the pivot proudly declares the knife's country of origin. ZT has also added a custom aluminum backspacer and machined titanium pocket clip to finish off the design. If you are looking for a larger high performance knife the ZT 0804CF will make the perfect fit.