This rust resistant hot dipped galvanized steel CODE spiral stair kit is designed to meet the International Residential CODE (IRC 2003 & 2006) requirements. (California Residents: L.A. fabricator License #1150, L.A. City Standard Plan #111) and is ideal for exterior application. It includes everything you need for installation including stainless hardware and center pole cap, easy-to-follow instructions, plus an installation video featuring Ed & Joe, "The Furniture Guys". The kit goes together quickly and easily, requiring no special skills or tools.