1216bc, 4.6″, 3″ x 1/4″, black, powder coated steel corner brace, used for reinforcing 90 degree angles by application to the inside or outside of the corner, wider width provides greater area of stability for long intersections of building materials, larger bolt holes provide options for structural support, angle is cut from rolled structural steel & provides greater reinforcement strength than if the steel was bent into shape, meets astm a6.