This is the slickest Fuel Filler Gas Cap out there! This product is manufactured from aluminum with a smooth matte finish.
To open the cap you press the center, turn slightly counter clockwise and the cap will pop up.
The dimensions are 2 1/2" in diameter and 3/32" above the mounting surface.
NOTE: a 1/8" hole may be drilled in center of plastic cap for a vent (located on back of aluminum cap).