Concertina coil is used on applications where volume is necessary as it forms a tube of lethal blades that is very difficult to breach. Typical Installations would be Military, Industrial, Residential, roofs, buildings.
Concertina wire is supplied typically in single coils or crossed spiral coils.
Single Coils: Extended in spiral type but No clips required for this type.
Crossed Spiral Coils: Razor wire coils are clipped together to make better security fencing than the single coils razor tape.
Concertina wire can be mounted on top of Y fence post or barbed wire arm for support, or just fixed to the a straight fence by lacing wires, or even used independently as a mobile obstacle barrier in military and other application.