Easy InstallationEach package contains 2 bases (4x4 wooden post and 4x4 vinyl post) and screws. Choose the appropriate base size and place it on the corresponding post, then screw the two screws into the post through the small holes on both sides of the base. The solar fence post light is charged in sunlight for 6-8 hours during the 4x4 fence post caps lights;4x4 fence post caps solar lights;4x4 fence post caps solar lights;solar post cap lights outdoor;4x4;solar post cap lights 4x4;4x4 solar post cap lights white;solar 4x4 post cap lights black;solar deck post lights 4x4;deck post lights solar powered 4x4;solar fence post lights 4x4day and automatically turns on for 10-12 hours at night Mode selectionOur 4x4 solar deck post cap lights have two modes: flashing lights like flames and a fixed warm light mode. It can illuminating fences, decks, mailboxes, making them a versatile and stylish addition to any outdoor space