This is a custom maid 304 Stainless steel 2 inch 3/16 main frame and 2 1/2 x 3/16 pivot base. You will need to email me and let me know bottom pivot base you would like (dose not come with pole just main frame) 6-8 inch round or 6x6 square and give a couple days to build. Every thing else I bought on ebay but Unistrut cost to mush to ship. Comes with bolts for base. Thanks Eugene