XtremepowerUS 4 CFM Single Stage Vacuum Pump 5 Gallons Chamber Kit Degass Urethanes, Silicones and Epoxies High Efficiency and Low Noise Heavy-duty Aluminum Alloy Casing Heavy duty 3/4" shatter resistant acrylic crystal lid allows you to see inside and bulletproof Flow Rate:VP135: 4 CFM Ultimate Vacuum: 5 Pa