Excellent workmanship. The trigger is well weighted for ease of use and is in just the right spot for a comfortable grip. The noise level is turned off and the rotation speed is easily adjusted with the forward/reverse button if you want to slow down. Specifications are based on a 4.5 hr source. cube feet per minute (weighing 90 pounds); I tried it with a 2.6 SCFM supercharger just to see how it performs in the field, not a shop compressor. I was pleasantly surprised - of course the 2.6 SCFM unit will provide what I need for light to moderate use. For continuous high speed use, you may need a larger compressor. My only complaint is with the blister pack which I felt required a cutting tool for!