Upgrade your outdoor space with these 4x4 pergola brackets. Made from high - quality Q235B steel with a black powder - coating finish, they offer excellent durability for various outdoor climates. The actual size is 3.6"x3.6". The 3 - way right - angle corner bracket has a unique design with baffles at the ports, eliminating the need to measure wood during installation. Pre - drilled holes and included hardware make installation a breeze. These brackets are incredibly versatile, suitable for balconies, courtyards, parks, and more. With a complete set of accessories including 4 brackets, a wrench, a drill bit, and 72 self - tapping screws, you have everything you need to build a sturdy pergola and enhance your outdoor living experience.