Plated steel. 12-gauge. High corrosion-resistant galvanized finish. G-40. Can be used in construction and other repair applications where a strong support is needed. 90 deg. angle. Can be drilled to meet a variety of applications. National catalog Model No. 4010BC. 1/8" thick. No. N179929: Finish: Galvanized, Width: 1" x 1", Slotted: No, Material: Steel, Thickness: 1/8", Length: 3', Pkg Qty: 1 No. N179937: Finish: Galvanized, Width: 1" x 1", Slotted: No, Material: Steel, Thickness: 1/8", Length: 4', Pkg Qty: 1 No. N179945: Finish: Galvanized, Width: 1" x 1", Slotted: No, Material: Steel, Thickness: 1/8", Length: 6', Pkg Qty: 1 No. N179952: Finish: Galvanized, Width: 1-1/4" x 1-1/4", Slotted: No, Material: Steel, Thickness: 1/8", Length: 3', Pkg Qty: 1 No. N179960: Finish: Galvanized, Width: 1-1/4" x 1-1/4", Slotted: No, Material: Steel, Thickness: 1/8", Length: 4', Pkg Qty: 1 No. N179978: Finish: Galvanized, Width: 1-1/4" x 1-1/4", Slotted: No, Material: Steel, Thickness: 1/8", Length: 6', Pkg Qty: 1 No. N179895: Finish: Galvanized, Width: 3/4" x 3/4", Slotted: No, Material: Steel, Thickness: 1/8", Length: 3', Pkg Qty: 1