1Applicable Model: Roof rack grommet plug cap is fit for Transit Connect 20122022 , please confirm whether your model is applicable before buying. 2Anticorrosion: Roof rack grommet plug cap are made of plastic materials that are durable and corrosion resistant, and can be used for a long time and withstand different weather conditions. 3Prevents Damage: Their primary function is to cover the vacant holes in your roof rack system, which prevents water, dust, and debris from entering and causing potential damage. 4Aesthetic Appeal: They also enhance the overall look of your vehicle. By covering open holes, they provide a sleek and finished appearance to the roof rack system. 5Precise Installation: The plug cover is designed to meet original equipment manufacturing standards, so it can be easily installed on the rear roof rack, ensuring good connection and stability.