This clip is 16mm long. They do another very similar looking clip which is 22mm long. The clip is commonly used for boot and tailgate linings.
10x Audi Boot Tailgate Lining Metal Trim Panel Clips- Metal Interior Trim Clips
10x Audi Boot & Tailgate Lining Metal Trim Panel Clips- Interior Trim Clips
10x Audi Plastic Nuts- Unthreaded 4mm diameter hole Engine Undertray Splashguard
VW AUDI BOOT TAILGATE TRIM PANEL LINING UPHOLSTERY METAL SPRING CLIPS INTERIOR
10 x Audi Boot Screw Exterior Lining Fastener Retainer Metal Trim Panel Clips
