Pet Fence Pros 1000' ProGrade HD Boundary Kit 16 gauge AWG PE for Underground Hidden Dog Fence Kit Includes: One - 1000 Foot Spool of Premium Stranded 16 gauge AWG Perimeter Wire Four - Waterproof DBY Splice Kits for Dog Fence Connections 100 - Pet Fence Pros/Boundary Training Flags Used By Professional Installers Nationwide.