ROBINAIR 3 CFM 2 Stage Vacuum Pump RA15300 VacuMaster 3 CFM Vacuum Pump HVAC High Performance Vacuum Pump - Engineered specifically for air conditioning and refrigeration service, and built with Robinair's proven offset rotary vane for fast, thorough evacuation. High Vacuum Rating - The two-stage, offset rotary vane design provides powerful, quiet high vacuum capability and assures moisture removal, while the high pumping capacity reduces evacuation time. Lifetime Filtration - The intake filter prevents foreign matter from entering the pumping chamber, and an internal exhaust filter separates oil vapor from the exhaust flow Direct Exhaust - The exhaust is expelled through the handle to direct it away from the service technician Sure-Grip Handle - The one-piece, molded handle makes it easy to carry the pump to and from job sites, and the handle stays cool to the touch during operation Compact Design - Pump measures just 15 1/2" long, while aluminum housing and offset rotary vanes keep the pump weight low, making it easy to carry.