Floor mount prefabricated Newel Post, complete with 9 crossbar holder, pre-welded base flange, cover flange, height adjustable handrail support.Material : Stainless steel AISI 316 grade for exterior use. Satin Finish.  Post Dimensions :1.66 inch dia. x 40 3/8” inch H ,adjustable handrail support can be extended 2 1/2” more.Welded flange 3 15/16” dia. x 15/64”