Per the manufacturer (Auveco), this is a rocker panel push type retainer Useful for a variety of applications, it is OE for Toyota models (2007-present) & Lexus models (2004-present).  It matches Toyota OE Part Number 75867-06030. Although this retainer is OE for Toyota/Lexus 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: Push Type With Drive Pin
                                                                                    Head Diameter: 20MM
                                                                                    Fits Hole Size: 8MM
                                                                                    Stem Length: 16MM
                                                                                    Color: Black
                                                                                    Matches OEM Part Number: Toyota: 75867-06030