Add a finishing touch to decks, fences, or signs with these Pylex fence post caps. Durable and attractive, these caps are a convenient way of hiding imperfections on fencing. The 4” x 4” post caps are designed for use on 3-1/2" x 3-1/2" square posts. The durable steel material stands up to the elements with a baked powder painting finish that resists rust. To install, simply screw fence post caps to posts.