National Square Corner Brace 2.4 x 3 x 3/16 in. Black is a heavy-duty square corner brace designed to reinforce 90-degree angles by attaching to the inside or outside of corners. Featuring slots for 5/16 inch carriage bolts, its square shape and multiple bolt slots on each side provide enhanced stability for wider building materials. The chamfered corners add a decorative touch, while the black powder coat finish improves weather resistance, making it suitable for various applications. Please note that the safe working load depends on the specific application and fasteners used. To ensure safety and effectiveness, it is to consult with design professionals before use.