Maximum Performance Dog Fence Wire - Ultra Thick 60 Mil Polyethylene Protective Jacket - Designed for Max Life Reliability and Low Signal Loss - Universal Compatible Thickest Pet Fence Wire Available: The eXtreme Dog Fence Max Wire is a 14 Gauge Pure Solid Copper Core with a Full 60 Mil High Density Polyethylene Jacket for Max Performance and Max Life 500 Continuous Feet: Enough Underground Dog Fence Wire to Cover Up to 1/3 Acre and Can be Buried, Run Above Ground and Secured with Yard Staples or Attached to an Existing Traditional Fence Compatible with ALL Electric Dog Fence Systems: Wire is the One Component of an In-Ground Dog Fence that will Work on ANY Brand or Model of Fence. Don't Let Your Wire be Your Bottleneck. Go eXtreme Other Applications: eXtreme Dog Fence MAX Wire is Also Designed for Other Low Voltage Outdoor Applications Like Robotic Lawn Mowers (LawnBott, Robomow), Landscape Lighting, Alarms, etc. Made in the U.S.A.: eXtreme Dog Fence Wire is Proudly Manufactured with American Craftsmanship and Patriotism, Right Here in the United States