Zero Tolerance 0450 Sinkevich Titanium Frame Lock Knife Small Sinkevich 0450Zero Tolerance 0450 Sinkevich Titanium Frame Lock Knife The 0450 from Zero Tolerance is a sleek, compact everyday carry knife designed in collaboration with renowned custom knife maker Dmitry Sinkevich. Inspired by the awardwinning Zero Tolerance 0454, the 0450 delivers the same sophisticated design in a smaller, more pocketfriendly package. Built for performance and durability, the knife features a 3. 25inch drop point blade made from CPM S35VN