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 Metal Spring Trim Clips for Audi Boot & Trunk Lining- 22mm Long 4A0867276
10x Mercedes Boot Trim Clips- Plastic Fasteners A12499007921 CLK CLS SL SLK etc
10x Audi 5mm Plastic Rivets- Trim Clips for Bonnet Seal, Bumper, Spoiler & Dash
10x Audi Bumper, Splash Guard, Sill & Wheel Arch Lining Plastic Rivet Trim Clips
10x Audi A4 Interior Door Card & Trim Panel Mounting / Fastener Clips
