PowRyte 4 Gallon Oil-Free Pancake Portable Air Compressor - 135 PSI 135 PSI max allows users to drive more nails and 2.2 SCFM 90 psi allows for quick recovery, 4 Gallon Tank Oil-free and maintenance-free pump for convenience Innovative fully packed shroud allows for better protection; Integrated carry handle for easy portability 4-gallon vertical pancake tank for improved center of gravity and easy portability Only 22 lbs. for easy portability