These small black clips fit into a 9x9mm hole and are used for mounting various parts into metal bodywork. Toyota use them on many different models and they can found around the wheel arch, bumpers, side skirts, sills, engine bay and car interior.
Please check the details carefully before you order. Every vehicle has many different clips and fasteners. Even if the ebay compatibility check says these are used on your vehicle, that does not mean that they are the only clip and will be the ones that you need. It is important to check the photo, part number and dimensions before you order.