Essential Pet Heavy Duty Boundary Kit - 16 Gauge Wire/500 FtEssential Pet Heavy Duty Boundary Kit provides a reliable, burial grade boundary solution for DIY pet fencing in challenging terrain. This 500 foot, 16 gauge solid core copper wire kit includes visibility flags and splices and is compatible with most major in ground system brands. Length and gauge: 500 foot roll of 16 gauge solid core copper wire designed for burial and outdoor use. Burial ready construction: Solid insulated wire rated for burial to