Cowl plugs are tailored to fit popular Cessna single engine aircraft.
High visibility yellow closed cell foam will not retain moisture.
Printed on one side is "Remove Before Starting Engine", and the other is blank for the N number. They are joined by a nylon strap with a fluorescent orange "Remove Before Flight" flag.
Didnt fit well at all, hard to cut down to size the leaving Uneven edges
Bought these to prevent another large birds nest in the engine area between the cylinders. They are about 2 inches thick but they fit snug in the openings. Thicker might have been nice but these seem to do the trick and cost about 1/3 of the red thick custom plugs. Id buy again.