PSUSA 500' Boundary Wire 16 Gauge Solid Core 16GW Continuous (Not 2 Spools) Solid Core Heavy Duty Professional Dog Fence Wire Compatible with Petsafe, Innotek, SportDog & Dogtra In-Ground Fence kits Polyethylene (plastic coated) solid core wire Sunlight resistant, Direct Ground Burial Rated Underground Perimeter Wire Made in the USA/ eXtreme Dog Fence Brand