I bought them in October 2020. Within a few weeks they began to rust. This is only 9 months old. I personally think the nut should stand up to the elements. They didn't go through mud where they could be scratched to accomplish this. The type of pitting shown is present on all 24. Some of them are worse than the two I photographed. The rust also got into my rims and damaged them. I'll post a photo after work today. Very disappointing. I will spend more money for better quality next time.