Expansion rivet, 6.0x12.0.

To fit:
Boxster (986) 1997-2004 - Used in the exhaust system, front wing and wiring system
Boxster (987) 2005-2012 - Used in the exhaust system and front and rear bumpers
Cayman (987C) 2006-2012 - Used in the exhaust system, wing and front bumper
911 (996) 1998-2005 - Used in the front wing, rear spoiler and wiring harness
911 (997) 2005-2012 - Used in the wing, rear spoiler and cabriolet top