Solar post caps add radiance and allure and contribute security and value to your property. Ideal for fences, railings, mailbox posts, docks, and walkways- almost anywhere a soft accent light is desired. Rugged cast aluminum construction, available in white or black, the Imperial offers a clean contemporary design. Powder coated finish means no future painting. The 2.5''x2.5'' Imperial includes a 2.25''x2.25'' and 2''x2'' adapter. It is designed for use with steel or aluminum posts.