I recently purchased a valve stem for my automotive wheels and it was a complete waste of money. According to my experience, the valve stem didn't last very long and had to be replaced after only a short time of use. The only pro I can say is that it was easy to install, but that's about it. The cons outweigh the pros with this product, as it quickly wore out and became a hassle to manage. Save your money and look for something more durable.