Zero Tolerance Assisted Folding Knife – Ken Onion Design Tactical 0350Zero Tolerance 0350 Assisted Folding Knife Ken Onion Design Tactical EDC The Zero Tolerance 0350 is a rugged, high performance assisted folding knife designed by Ken Onion for everyday carry, work, and tactical use. Built in the USA, it features a durable CPM S30V drop point blade with a subtle recurve edge for enhanced slicing power and long lasting edge retention. The Cerakote finish adds corrosion resistance and a tough, non reflective surface