Concertina razor wire is an effective fence, it is formed and clipped together in large coils so it can be expanded or stretched like a concertina which were used for high security purpose. Concertina razor coils is made by stainless steel sheets and galvanized high tensile claps. It has a beautiful crossing outlook and it is suitable for uses after extending, making an ideal security fencing with great anti-climb and anti-cutting property. Standard materials for razor type barbed wire are either galvanized or stainless steel.