The blade on this knife is nice quality black finished 440 (plain) steel. This is a spring assisted knife, meaning when you push on the thumb stud to open it a spring takes over and propels the blade open. Spring assisted knives are legal in most areas. The body of the Vertigo is made out of black steel and features a rosewood insert on both the front and back of the knife. A black pocket clip (tip down) ensures easy carry and access. The overall fit of the knife body is quite good as are the the action and lock-up.