Extreme Dog Fence Electric Dog Fence Wire Perimeter Boundary Installation Kit | 500 Feet 20 Gauge AWG Copper Wire | 50 Flags | 2 Wire Splices In-Ground Electric Dog Fence Perimeter Wire Installation Kit Wire: 500 Feet of 20 Gauge Copper Wire Training Flags: 50 Perimeter Marker Flags Wire Splices: 2 Professional Grade Wire Splices Fast, free shipping from the Dog Fence Experts!