The PetSafe Boundary Wire 500ft Spool is a durable and reliable fencing solution for pets. This solid core 20 gauge wire is designed to be buried underground to create a safe and secure perimeter for your furry friends. Made by PetSafe, a trusted brand in pet supplies, this boundary wire is of high quality and will help you train your dog to stay within the designated area. Whether you are trying to keep your pet away from certain areas or prevent them from running away, this boundary wire will provide the necessary boundaries for a well-behaved and safe pet.