These are well made parts that feel like they were made from a blank. The finish is perfectly applied and will probably last as long as the valve covers themselves, for as long as you have them. The mechanical processing is flawless. I chose orange. The photo shows why. They are great for our motorcycles and a car, but not for a truck and another car. They make too much sense when screwed in as far as possible on these two cars, they don't sit on top of the valve. The threads on these eight Schrader valves are much shorter than the threads on the nuts. This means they have no thread tension so they can loosen and loosen as I ride. Again, this wasn't a problem on a bike or car, but it was on a truck and another car. The advantage of a long thread is that with long open valves, e.g. B. in bicycles, covers the entire thread area, where they add some shine. If after many miles with the truck or car in question they come loose or don't come loose I will edit this review accordingly.