Genuine OEM Volkswagen Pop Rivet, part number N91121701. This blind fastener is designed for quick and secure installation in areas where access is limited to one side of the material. It expands upon installation to create a permanent, vibration-resistant joint. Genuine OEM rivets are essential for seat and interior trim assemblies, as they are manufactured to the specific expansion ratios required to hold components firmly without cracking or damaging the surrounding plastic or metal mounting points.