Removable tank design – allows you to separate the tank and still have it connected to the compressor with a standard air hose and allows you to regulate the air where you are working and reduces line drop. Zero gravity design – allows for maximum ease of transport and balance. Low-profile compact design – fits beneath the cover of virtually any full-size pick-up truck. Enhanced protection – full wrap around roll bars protect components. Cast iron pump cylinders – for longest life in the toughest job site conditions. Locking regulator knob – ergonomic design locks at desired setting to maintain consistent pressure. High flow 3/8 in. sized air line construction allows for high air flow to tools to prevent power drop off during high demand usage. Quick couplers – 2 universal push style couplers accept 1/4 in. industrial, automotive and ARO plugs with easy single-hand connection. 10 in. flat-free wheels – allows for easy maneuverability in tough job site conditions. Ball valve tank drains – easy quarter-turn operation for fast and trouble-free draining. Control panel – convenient access to air regulation near the work area when tank is removed and connected with hose extension to stationary tank. Belt tightening feature – allows for easy maintenance and setting of proper belt tension. Brand: RIDGID Feature: Portable, With Wheels Power source: Gas Capacity: 8 gal Power output: 5.7