... =1015(ball middle),used in low and many contruction platform fence post (2)higher H=1100(ball middle),used in middle and ... high contruction platform fence post (3)three H=1200(ball middle),used in higher contruction ... --capped end--pipe base--tread stair plate5.Advantage: this ball fence post is hot dipped galvanized,anti-rust, cheap and practical,easy ...