This is a trim panel retainer. Useful for a variety of applications, it is OE for GM models (1991-present, Trucks).  It matches GM OE Part Numbers 15638413 & 15963179. Although this retainer is OE for GM 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: Triple Head
                                                                                    Top Head Diameter: 8MM
                                                                                    Bottom Head Diameter: 14MM
                                                                                    Stem Diameter: 8MM
                                                                                    Stem Length: 15MM
                                                                                    Color: Black
                                                                                    Matches OEM Part Numbers: GM: 15638413 & 15963179