T-20Wire 100 Feet Twisted Wire 20 Gauge Underground Dog Fence Wire
100 Feet Twisted Wire 20 Gauge Dog Fence Wire. The 20 Gauge Twisted Underground Dog Fence Wire is used to open up a section of the underground dog fence. Let’s say you have a perimeter around your back yard but want to open an area for the dog to walk through. That is when you switch to the twisted wire. When the wire is twisted the signal cancels itself out.