I put these aluminum valve stem caps on my steel valve stems for my car that's surviving the winter, never had to inflate tires I've had to inflate my tires blown out last week and the valve stems froze to the valves. Installing new valves cost me $195. They had to drill out the valve covers on all my tires and that also damaged one of my wheels. bad product, take it immediately, do not buy, buyer be careful, go and buy an eight dollar coin, and I will cost you a few hundred.