Over the I've owned a number of these portable tire inflator. This is by far the best. It is sooooo much faster than any other I've owned. I tested it and filled my car tire from 25 to 35 psi in 1 minute. It feels well built and it's great to have the satchel to keep everything together. The real bonus is the coiled extender and ability to connect it directly to battery posts. Don't even bother looking at any other product. P S I rarely write reviews.