Description High efficiency single stage pump 1/4"SAE and 1/2"ACME port access Ultimate vaccum 8"microns Large fan keeps vacuum pump cooler and extends life Easy access oil fill port Exhaust at oil fill location 110-12" Volt ? 60 Hz Free Air Displacement: 1.8 CFM Ultimate Vacuum: 8"Microns Voltage: 110-12" Volt ? 60 Hz Power: 1/4 HP