Filigree Pattern spiral staircase step, is available in mild steel, aluminum, or stainless steel and can be incorporated in all kit and fully assembled units. Designed and cut in house, the filigree scroll work not only offers great visual characteristics, but is excellent for water drainage and traction. One of our best selling steps, and for good reason. Filigree tread pattern will be an eye catcher for all, on your spiral stair application.