Originally looked good and worked great. I wish I had read about salt belt corrosion. I had to use a grinder to get them off the valve stems. I found a video on You Tube that was very helpful on how to salvage my valve stems and how to grind down to the threads on one side then use the clamp on the valve stem and cap and then very easily disengage. Black also turned into a bronze color, which can also be corrosion.