Razor wire is made up of high tensile core wire and a punched steel tape with sharp barbs at close intervals uniformly. The razor tape is cold crimped tightly onto the spring steel core, and finally into rolls for easy transport and deployment. And there are many styles of coils and blades that can be used in different environments. The wire is exceedingly hard to cut utilizing hand devices. While the barbs have a penetrating and grasping activity, reinforced steel makes it difficult to twist.