Giving you all the features and benefits of model 8422HK30, this model steps it up a notch with the addition of a 20 Gallon ASME tank providing more reserve air. It produces 19.2 CFM at 100 PSI and utilities the popular 9 HP Honda engine with automatic idle-down, for increased fuel efficiency, and an atmospheric unloading system to prevent oil consumption. Battle tested contractor tough? There's only one way to find out. Get it dirty, run it hot and don't let up - just like a contractor. That's how they're used, so that's how they're tested. Engines, pumps, motors, switches - every component of every ROLAIR compressor is battle-tested both in the field and at our Wisconsin factory. You have our guarantee that your ROLAIR compressor is ready to roll on day one, no excuses.