It is used to indicate the right direction of entry for customers and prevent them to enter from wrong direction. Material: the primary gate shaft is made with ft89*4.5mm flawless steel pipe; the standing pole is made with ft60*3mm steel pipe; the horizontal pole is made with ft25*1mm steel pipe. All of these are chrome plated. The standard gate wide is 2 meter. It can be changed according to the request of customers, but it can not be more than 2.4 meters. There are spare holes on the standing pole and it can fit all the gates and guardrails of ostar series.