PetSafe Fence Wire and Flag Kit, Includes 50 boundary Flags and 500 ft of Wire, Expand your In-Ground Fence EXPAND YOUR PETSAFE IN-GROUND FENCE -500 feet of solid 20 gauge insulated copper wire covers approximately 1/3 of an acre RATED FOR DIRECT BURIAL - perfect for most in-ground fence installations 50 BOUNDARY FLAGS - provides a visual reference when training your pet to the boundary TWO SPLICE KITS - use 2 gel-filled capsules and 2 wire nuts for above and below ground wire connections for the best results with your fence Call, chat or email with our expert PetSafe US-based customer care specialists six days a week; They are waiting to assist you and your pet with your product needs Manufacturers warranty is only valid when purchased from an authorized retailer