This is a door trim panel retainer. Useful for a variety of applications, it is OE for  Ford & Mercury models (1985-present).  It matches Ford OE Part Number N805155-S. Although this retainer is OE for Ford 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: 1/2"
                                                                                    Bottom Head Diameter: 3/4"
                                                                                    Stem Diameter: 11/32"
                                                                                    Stem Length: 3/4"
                                                                                    Color: Black
                                                                                    Matches OEM Part Number: Ford: N805155-S