There were different sizes in the pack (although they all have the same marking) which initially fit my wheel nuts and could be tightened. They quickly pulled my lug nuts off and my driver's side wheel fell off 24 hours later while on the freeway, destroying my front end and damaging another car. About 12 different nuts could be tightened by hand at this point. The tow truck driver who arrived at the scene stated that the mother's size did not match the size listed on the page. Amazon, and that's just because of how much it's impacted my life.