Zt-Zero Tolerance 0707 Frame Lock Knife Carbon Fiber CPM-20CV Stonewash Plain Edge. ZT does it again with the new 0707. The knife is a long and slender design that fits into the pocket with the extra-deep-carry clip, and curved handles. The blade material is CPM-20CV stainless steel with great edge retention and wear resistance. Handle is made of a titanium frame and a machined carbon fiber front scale. The 0707 is equipped with the proprietary Zero Tolerance Tuned Detent System (TDS), which allowed ZT to perfectly tune the detent, as well as ensure an easy opening, even with pressure on the lock bar.