This Puma Industries, Air Compressor, model LA5721, is a Single Stage Oil-Less Direct Drive Series, and specifications are: 1.0 HP Running, 135 Max PSI, 2 Gallons, 33 lbs. Its features include: Compact and Portable Design, Oil-Lube models feature "monobloc" die-cast aluminum pump with cast iron cylinder sleeve, Oil-Less models feature patented pump design for lower noise and improved cooling, Maintenance-free on oil-less units, All models are equipped with induction motors with overload protection.