Bought this little 1 inch impact because I needed a smaller impact than my large Ingersoll. I do a lot of undercarriage work and heavy construction machinery work, and this little impact does an excellent job. My air compressor is an 80 CFM at 150 psi which feeds this little impact without a problem. For most people, though, you could probably bust one to two tight nuts off before having to wait for the year to build back up. Other than that, excellent Gun.