Concertina is security wire equipped with sharp blades with a 2.50mm diameter. It’s an extremely deterrent system that completes an existing fence through placement on a low wall or above flexible fencing or rigid panels. In our anti-climbing or high security fences, concertina barbed wire is installed in the flanges of Y- or L-shaped intermediate posts. Barbed wire is generally used for the protection of industrial and military zones, penitentiaries, borders and all sensitive areas requiring high surveillance. Due to the sharp blades, this type of barbed wire is not suitable for residential areas.