 Once again, they leak over time. You have to be careful in watching them. But then there's some small and medium-sized, more expensive tire inflators that he talks about that are very, very effective. And anywhere from $70 to $100, et cetera. The best of which is the Gewalt Max Tire Inflator. Small, more powerful, and quiet at 77 decibels. Works well with a 12-volt cold cord. And you can also have it cordless or battery-operated option.