The robust black & yellow Drop Down Parking Post will protect parking spaces from unauthorised cars. The hot dip galvanizing process ensures protection against corrosion. Installation is sub-surface using concrete. Also availbale in zinc grey. Note: The zinc grey model only takes 2-3 days to deliver. Grey Drop Down Post Comes with cylinder lock & two keys Constructed from strong square steel tube Hot dip galvanized Installation is sub-surface using concrete.