I bought it on December 8th and installed it probably within a week. It's March 4th, it's been less than 3 months and they've developed rust. The price was good and they seem to be durable but the finish is useless.
Pros
HIGH STRENGTH AND DURABILITY β MuHize M12x1.25 Wheel Nuts are cold forged and heat treated steel with unique anti-rust, anti-corrosion and anti-stripping technology. The surface treatment process of triple black coating ensures that the color is not easy to fall off.