This light adds a soft touch of warm white light to your deck or patio, and includes 4 adaptors, including 4”, 4.5” & 5”. These solar fence post caps gather energy from the sun during the day, and then automatically come on at dusk to provide outdoor lighting exactly where needed. These lights are a great way to top off your fence and deck posts. Let these lights help make your outdoor settings as livable, enjoyable and beautiful as possible.