Pump rotates CCW as viewed from the flywheel. Uses one A groove belt. Aftercooler provides dry, high-quality air at the pressure you need, ensuring less wear on your tools. Powerful NorthStar® oil-lubricated cast iron cylinder pumps are designed for long life and 100% duty cycle operation. Aluminum pump head allows for superior heat dissipation. Features a balanced flywheel for use with single-groove belts, a canister-type air cleaner and oil sight glasses. (1) Air compressor pump.