These are used to attach bumpers, grilles and plastic panels to the underbody of many different Honda models.
They fit into a 10mm hole and have a 20mm collar. The stem length is 11mm.
The clips are a high quality equivalent to the OEM parts. 
HONDA BUMPER GRILL STRIP PANEL TRIM CLIPS
Bumper Grill Strip Panel Trim Clips
Honda
Accord / 2002-2007
Accord / 2007-onward
Civic / 2001-2005
Civic / 2006-onward
Jazz / 2004-onward
Acura RL /2005-2011
Acura TSX -TL /2004-2007
Acura TSX Wagoon / 2011-onward
Acura TSX-TL / 2008-onward
Acura TSX / 2009-2011
FR-V / 2004-2009
COLOUR IS BLACK
Head Diameter : 20mm
Steam Length : 11mm
Fits Into : 10mm
 
SET INCLUDES ;
30 x plastic clips
Original Part Number : 91503-S7A-003