National Hardware 2" x 9" Black Heavy Duty Wide Corner Brace is designed to reinforce 90-degree angles by securing the inside or outside of corners. This heavy duty wide corner brace features a 1/2 inch carriage bolt and a wider width that greater stability for long intersections of building materials. The larger bolt holes provide versatile options for structural support, while the black powder coat finish enhances weather resistance for durability in various conditions. Please note that the safe working load depends on the application and fasteners used, so consulting design professionals is to ensure suitability for your project. Model Number: N351-491