Robinair (15310) VacuMaster Single Stage Vacuum Pump - Single-Stage， 3 CFM<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Free air displacement: 3 CFM</li><li>Intake fitting: 1/4 inch flare and 1/2 inch Acme intake ports</li><li>Voltage: 110V</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41dRQ1w%2BD1L.jpg" noproxy>