Side Mount prefabricated newel post, complete with 9 crossbar holder, lateral anchorage plate 3 15/16” dia. x 15/64”., height adjustable handrail support.Material : Stainless steel AISI 304 grade for interior use. Satin Finish.  Post Dimensions :1.66 inch dia. x 47  1/4” inch H ,adjustable handrail support can be extended 2 1/2” more.Distance between center holes 4”.