One of the most striking aspects of real spears is their diversity. Across different regions and eras, spears have been designed for specific purposes, illustrating how intimately human societies were connected to their environments. In Africa, for instance, the Assegai—a type of spear used by the Zulu people—was known for its long, slender design that allowed for precision in hunting and combat. Meanwhile, the Roman pilum was engineered to be a throwing spear, featuring a unique design that disrupted enemy shields, demonstrating the tactical thinking of ancient Roman armies.

Fence brackets are unique to wrought iron fences and often used to hold the fencing components to the posts. These slide over the rails, are set against the posts and are often then secured with a self-tapping screw to hold everything together. Aluminium fencing does not use brackets. Instead, rails are slid into punches in an aluminium post and then a self-tapping screw is driven through the post and into a rail inside it in order to secure everything.

Aluminium's resistance to corrosion is another significant advantage. Unlike wood, which can warp, rot, or require regular maintenance, aluminium profiles are designed to endure various weather conditions without deteriorating. This makes them ideal for applications in diverse climates, from humid coastal areas to dry, inland regions. Furthermore, the surface of aluminium can easily be treated with powder coating or anodizing, allowing for a broad spectrum of colors and finishes that can match any design theme.