The SportDOG Wire and Flag Kit allows you to add more coverage to your SportDOG In-Ground Fence. The SDF-WF kit comes with a spool of 500 feet of wire, a bundle of 50 boundary flags, 2 wire nuts, and 2 waterproof gel-filled splice capsules. Compatible with SDF-100A SportDOG Brand In-Ground Fence and SDF-100 SportDOG Brand In-Ground Fence.