1.Double stage vacuum pump 2.New refrigerant,especially for R410A,R407C,etc 3. 2~8CFM 4.100% preventing oil-returning V-i120SV vacuum pumpAutomatic ... indication of internal system pressure on the vacuum gaugeSeal made from special materialNew refrigerant series vacuum pump especially for R410A,R407C,etcMeet all ... Weight6.7 Kg*Weight:according to the motor 220V only. Single Stage Vacuum Pump(V-i120SV)