For the determined dog who loves freedom, but needs boundariesCreate a custom-shaped fence to keep your persistent pup safe. The Stubborn Dog In-Ground Fence system allows you to create an in-ground fence for dogs tailored to your yard’s unique shape and size. With this fence you’ll get 500 ft of wire so you can fence in a 1/3-acre yard. If your yard is bigger, you can purchase more wire to cover up to 25 acres. Features: Best in-ground fence for the most stubborn dogs Create a custom-shaped fence for your yard Tone plus vibration mode is great for hearing-impaired pets Cover up to a 1/3-acre yard with included 500 ft of wire Purchase extra boundary wire to expand up to 25 acres Installation is a 2-person, DIY weekend project Includes 1 Stubborn Dog In-Ground Fence Receiver Collar Tone plus vibration mode and 4 levels of adjustable static correction Purchase additional receiver collars for all of your pets For dogs 8 lb and up and who are 6 months and older Waterproof collar adjusts to fit neck sizes 6-28 in Battery-operated receiver collar, includes 1 9-Volt alkaline battery Our static collars are part of our ongoing mission to provide the best tools, education and support for pet parents seeking safe, effective solutions. Condition:  This PetSafe In-Ground Fence is new and unused.  The box is opened and the 500 feet of wire was unwound from it's original packaging.  All items are included, unused and ready to help set up a boundary line for your pets on your property!