A nice SPRING assist knife. This may be the way of the future for switchblades. These new models open as easy if not easier than a fully automatic knife. A great compact size knife. I think you'll be happy with it. Just honest good quality. The 440 non serrated blade on this model = 2-1/8". Opens very quick. This knife is basically as thin as a good writing pen. Use as a money clip. It even has a safety.