This standard fir tree clip is used on a few different vehicles by both Peugeot and Citroen. The clip fits into a 6.5mm hole and has an 18mm head.
The part is normally used for interior trim panels and linings including door cards, van linings, boot linings and upholstery.
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.