Mirage step is available in mild steel, aluminum and stainless steel and can be incorporated into all fully assembled and kit spiral stairs. Originally designed to fit into a custom spiral staircase application, the mirage step has earned a spot on the stairways Inc tread line up, and for good reason. Mirage step offers all the benefits as our bar grate and plate gate spiral stair steps, but blows them away with its pattern when it comes to aesthetics. Elegant yet unique in design, the mirage step is sure to turn heads on your spiral stair unit.