Supergrit safety treads are ideal for new concrete stairs. A heat treated, corrosion resistant, extruded aluminum base with a lacquered satin finish. The use of diamond-hard aluminum oxide in the filler assures long tread life under heavy pedestrian traffic use. Supergrit is designed for both inside and outside use. Diamond hard aluminum oxide used in the filler assures long tread life under heavy pedestrian traffic use. For improved appearance, the nose is designed to cover the radius created when forming sheetmetal steel pan. 12ft x 4in, 0.25in thick. Available in Black.