300m Boundary Wire - Solid Copper Dog Fence Underground Invisible Red CableThis is a 300 metre roll of Copper Electric Boundary Solid Wire with an extra thickness of 1mm, usually used with our TP16 Electronic Dog Fencing System for pet containment. This copper boundary wire is a thicker, stronger solid copper cable, limiting underground breakages, hence allowing for a reliable and stronger signal. This cable will allow you to expand the boundary of your fence system. Please note this is the cable wire only and not the full