Durable Materials: The internally mounted corner brackets are made of carbon steel with a black powder coating, making them durable, and stable, capable of supporting heavy loads. 45-Degree Design:Featuring a 45-degree angle, these patio roof brackets form a triangular structure with the canopy, evenly distributing weight across walls and mounting points. Easy Installation: Each bracket comes pre-drilled with screw holes, allowing direct connection to beams and posts without cutting wood, making installation easy even for non-professionals. Package Includes:Our product includes 4 heavy-duty 45-degree angle support brackets and screws, perfect for reinforcing joints in multiple outdoor wooden frame structures. Applications: This support bracket is suitable for pergolas, treehouses, patios, decks, and other locations, providing strong support and enhancing the stability of outdoor structures.