Pumps come with cast iron sleeve and enough CFM to power most tools used on construction sites. Efficient compact design. CFM at 90 PSI: 8.2, Max. PSI: 130, Flywheel Diameter (in.): 11, Stages: 1, Total Cylinders: 2, Required Power: 3 HP Electric or 5 HP Gas Motor, Dimensions L x W x H (in.): 11 1/4 x 11 x 9 1/4 Pump rotates CCW as viewed...