EXPAND YOUR EXISTING IN-GROUND FENCE: Help train your pet to stay within certain outdoor areas; custom-shaped area INCLUDED: 150-foot spool of insulated 20-gauge solid copper wire COMPATIBILITY: This wire works with Pawz Away Outdoor Barrier (sold separately) and any PetSafe In-Ground Fence QUALITY PROMISE: PetSafe brand has been a trusted global leader in pet behavior, containment and lifestyle innovations since 1998 to help keep your pet healthy, safe and happy U.S.-BASED CUSTOMER CARE: Our pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions