CONTENTS: 500 Foot Spool of 18 Gauge (Good Quality) Extreme Dog Fence Wire COMPATIBILITY: Extreme Dog Fence inground dog fence wire is compatible with ALL brands and models of inground fence for dogs including PetSafe, SportDOG, Perimeter Technologies, Dogtra, High Tech Pet, Invisible Fence, Pet Stop, DogWatch, Innotek, DOGTEK and others. INGROUND or ABOVE GROUND: Extreme Dog Fence perimeter dog fence wire can be used for either an underground dog fence layout or an above ground dog fence layout. The wire is both UV resistant and rated for ground burial. It can be buried up to 12 inches for underground installation or secured down with yard staples for above ground installation. ADDITIONAL PARTS: Our Amazon Store is stock with additional dog fence products including dog fence collars, batteries, replacement transmitters, twisted wire spools, and other essential pet products.