Smith & Wesson Black Ops Blue Assisted Opening Knife Black Tanto. Razor-sharp 4034 stainless steel tanto blade Non-reflective anodized black coating M.A.G.I.C. assisted-opening mechanism Blue impact-resistant aluminum handle Ambidextrous thumb stud & finger actuator Liner lock mechanism and sliding safety switch Measures: 3 2/5" blade; 4 3/10" closed