Product height:500mm/600mm/750mm;product diameter:76mm.（Package Includes:2×Security Posts for Driveways;8 x expansion screws） The base has four holes,bollards can be fixed on the ground by a screw.This column is easy to assemble and disassemble,and is flexible in application. Reflective tape enhances driver visibility to encourage awareness and caution when driving,increased visibility at night. Steel bollard,strong material,beautiful appearance,,This is an ideal lockable barrier that protects your car park from unknown vehicles. This bollard stands vertically to enhance visibility and protection of entrances,parking lots,sidewalks,bike paths,etc