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 Metal Spring Trim Clips for Audi Boot & Trunk Lining- 22mm Long 4A0867276
10x Audi Plastic Trim Clips for Door Cards & Interior Trim Panels, & Covers
