Run a line of Steel Core Tension Wire along the bottom or top of your pet fence for optimal support. The core of this wire is an 8-gauge galvanized aircraft cable, braided from seven strands wire, providing exceptional strength and durability. The black PVC coating protects the wire from sun and weather, and allows the wire to blend effortlessly with the rest of your fence system. Use the Steel Core Tension Wire along the bottom of your fence if chewing from pets or rodents is threatening your fence, or along the top where the fence is vulnerable to falling branches. This wire is compatible with all 8 gauge connectors and tighteners.