Square metal fence post caps are a type of fence post cap that are designed to fit on the top of square metal fence posts, such as those made of aluminum, steel or wrought iron. They are made galvanised raw steel and come in different sizes to fit different types of square metal fence posts. They typically have a flat top designed to cover the post and provide a finished look to the fence. They are secured to the post by being pushed over the top of the post to provide a weather-resistant barrier to protect the post from water and other environmental elements, which can cause rust and corrosion. They are also durable and long-lasting, which makes them an ideal choice for outdoor use. They come in galvanized raw steel to provide an extra layer of protection against the elements, and provide an industrial finish to the fence.