This is a door panel retainer. Useful for a variety of applications, it is OE for Mercedes models (2002-present, All G Class Models & Most Coupe & Sedan Models).  It matches Mercedes-Benz OE Part Number 463-988-02-78. Although this retainer is OE for Mercedes vehicles, it is universal and can be used on any vehicle or application requiring this type of retainer and meeting these specifications.
                                                                                    Material: Nylon
                                                                                    Fastener Type: Double Head
                                                                                    Top Head Diameter: 11.5MM
                                                                                    Bottom Head Diameter: 18MM
                                                                                    Stem Diameter: 9MM
                                                                                    Stem Length: 14MM
                                                                                    Color: Black
                                                                                    Matches OEM Part Number: Mercedes-Benz: 463-988-02-78