 Once again, they leak over time. You have to be careful in watching them. But then there's some small and meaty size, 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 cord. And you can also have a cordless or battery-operated option.