Grip-Rite GR254CTS 2HP 4 Gallon Twin Stack Compressor Perfect for roofing and framing applications 2.5 peak HP motor is also built to last, featuring ball bearings and industrial grade components Pump is cast iron and it feeds into twin stack tanks holding an ample 4.3 gallons Easily storable, powerful enough for a variety of applications, and built to last Oil-splash lubricated 3450 RPM Compact twin tank stack design Industrial grade motor with ball bearings for greater durability Heavy duty pump with cast iron cylinder