Easy installation: You can fix with a screw, a nail, or glue. For best results apply exterior adhesive to the inner lip of the cap. This secures the cap and prevents it from being blown off in strong wind. Versatile use: These aluminum post caps cover fence posts and gate posts to prevent rust. High quality, durable: UV- and heat-resistant; impact-resistant. Metal caps do not warp or deform like wood, plastic, or resin, and they offer longer life in all weather. They protect the top of posts from rain and sun. Note on transport: Some surface scratches may occur during transit; they can be covered with spray paint if desired. Use scenarios: - Finishing a long fence line in windy or harsh conditions to prevent rust and maintain a clean appearance. - Protecting gate posts from rain and sun at outdoor entrances, extending post life. - Replacing worn post tops during renovation to upgrade to a durable, weather-resistant finish.