"Alert drivers to temporary or permanent no-vehicle zones with Guardian 2' 7.75"" H Removable Safety Bollard. Designed to protect pedestrian and non-vehicle traffic in areas where drivers might try to access, such as trails, sidewalks or docks, this high-visibility yellow bollard features three highly reflective white stripes to ensure that it is seen during night or day. The removable design allows it to be uninstalled easily for temporary or intermittent vehicle access. The 6.5"" diameter bollard has a domed top, which prevents accumulation of dirt or debris. It installs using a sleeve and screw, and ships with all installation hardware."