The PetSafe 500-ft. Boundary Wire for In-Ground Fence RFA-1 is a durable and reliable electronic fence solution for dogs. Made by the trusted brand PetSafe in the United States, this fence wire model RFA-1 helps to create a secure boundary for your pet to stay within the designated area. With its long length of 500 feet, this product provides ample coverage for your furry friend to roam freely and stay safe.