Cold Steel Knives – Double Agent I Fixed Blade Knife with Grivory Grip Onlays and Double Ring Handle. Model CS39FKS. 7 1/2″ overall. 3 1/4″ AUS-8A stainless serrated Karambit blade. One piece stainless construction with Grivory Grip onlays and double ring handle. Lanyard slot. Black Secure-Ex neck sheath with chain.