Custom 64" diameter stairway with 30 degree treads with wood overlays. The handrail is # 203 (2") round steel tubing, balusters are # 306 (1") round steel tubing, two per tread spaced equally, with pan type treads custom 1" to 1" lip. The mahogany wood overlay treads a routed grove that fits into the steel pan about 1/4" inch in depth. The center column is a 6" ID steel schedule 40 round pipe. The stair was delivered with white oxide primer and final paint was applied by others at the job site.