Aluminum. To protect nose of stair. 1-1/8". Screw nails included. Carpet metal installation on concrete surface suggestion: Drill a hole in the concrete, insert a 3/16" x 1-1/4" or 1/4" x 1-1/4" wood dowel. Use the screw nails provided with carpet metals, insert into dowel, expanding the dowel to lock in place. No. 66035: Length: 3', Width: 1-1/8", Material: Aluminium, Finish: Polished Aluminum, Pkg Qty: 1, Package Type: Bag No. 78022: Length: 3', Width: 1-1/8", Material: Aluminium, Finish: Satin Silver, Pkg Qty: 1, Package Type: Bag No. 79020: Length: 3', Width: 1-1/8", Material: Aluminium, Finish: Satin Brass, Pkg Qty: 1, Package Type: Bag No. 74690: Length: 3', Width: 1-1/8", Material: Aluminium, Finish: Almond, Pkg Qty: 1, Package Type: Bag No. 43878: Length: 3', Width: 1-1/8", Material: Aluminium, Finish: Pewter, Pkg Qty: 1, Package Type: Bag No. 66266: Length: 6', Width: 1-1/8", Material: Aluminium, Finish: Polished Aluminum, Pkg Qty: 1, Package Type: Bag No. 78105: Length: 6', Width: 1-1/8", Material: Aluminium, Finish: Satin Silver, Pkg Qty: 1, Package Type: Bag No. 79103: Length: 6', Width: 1-1/8", Material: Aluminium, Finish: Satin Brass, Pkg Qty: 1, Package Type: Bag No. 43880: Length: 6', Width: 1-1/8", Material: Aluminium, Finish: Pewter, Pkg Qty: 1, Package Type: Bag