Designed for use on trucks, buses, trailers and other industrial applications. Made of standard malleable iron with a galvanized finish. 2-1/8 inch x 4-3/8 inch step pad has crosshatch pattern to prevent slipping. Stainless steel spring holds step in up or down position without rattle. Mounting plate is 4-3/4 inch x 2 inch with mounting holes 4 inch apart.