Concertina razor wire is a combination of ordinary wire mesh and concertina wire, usually made of high-strength single round steel wire and four twisted barbed wire nails.The concertina razor wire has a hard and sharp blade that will frighten or injure anyone who wants to pass through the concertina razor wire. It is widely used on the top of existing fences or solid walls and is by far one of the most perfect physical barriers in borders, emergencies or military activities.
