Collapsible Bollard features built-in mounting hardware and internal locking mechanisms (no additional hardware required). Lightweight design ensures easy operation with no additional storage requirements. Narrow construction makes for low-profile clearance when lowered. Bright yellow powder coating ensures high visibility for drivers.we always could make it as 304,316L material, Both round and square tube can be made. Mount pre-assembled units to new or existing concrete. Lock bollard in both lowered and upright positions. The stainless steel material of the fold down bollard is a high-grade silver color. It can be installed in some high-end places and parking lots. The surface of stainless steel can be customized. For example, the surface treatment of stainless steel can be made smooth or brushed finish. The smooth finish makes the surface smoother, and the brushed finish makes the stainless steel bollards look more textured. On the surface of the bollard, we can follow up the actual need to add light-emitting strips, led lights and solar lights. FAQ's Q: What bolts are needed to install the bollard? A: M10 expansion bolts. Q: Are the bollards galvanised? A: Yes before they are powder coated..