7 CFM Vacuum Pump Single Stage Rotary Vane 1/2 HP Deep HVAC AC Air Tool Blue New High-quality Vacuum Pump Oil No-Flow Back Design Oil Viewing Window Strong Heat Dissipation Portable Handle Design Versatile Uses Ultimate Vacuum: 5 Pa,Voltage: 110V/60HZ,Model: RS-1,FAD: 7 CFM,Power: 1/2 HP