The YELLOW JACKET BULLET vacuum pump is an affordable option for HVAC technicians who know the importance of pulling a deep vacuum. The BULLET pulls down to 25 microns or better, protecting from contaminants and noncondensable gases in the HVAC system, which can damage components, reduce efficiency and cause system failure. Yellow Jacket® BULLET™ Vacuum Pump, Single Phase, 7 cfm Displacement, 1/2 hp, 115 V AC, 60 Hz Frequency, 28 oz Oil, 6 ft Motor Mounted Switch Cord, 16-1/4 in Overall Length, 6 in Overall Width, 11-1/2 in Overall Height, 40 deg F, Domestic