I installed a full set of these on my Highlander in August 2020. They looked great when on the car but as of March 2021 they had significant rust. Sure, I live in Minnesota where road salt can do nasty things to any metal, but they didn't work anywhere near the way I've experienced OEM nuts. The OEM ring nuts rounded off a bit after 6 years and needed replacing, but I don't recall them being badly rusted. I had high hopes for her. The size is perfect, they look like OEM and work, but they corrode too easily. I'm looking for a rust resistant replacement.