ATZ1820PCF Artisan Cutlery Proponent Framelock CFThe ATZ1820PCF Proponent pairs a 4 inch D2 blade with a carbon fiber framelock handle, offering serious edge retention and corrosion resistance for extended work periods. The satin and sand polished finish reduces glint while the ceramic ball bearing deployment ensures smooth, reliable opening. At 5 inches closed with an extended tang, thumb stud, and reversible pocket clip, this is a capable mid size EDC or field knife built for users who need steel