ZENY 4CFM 1/3HP Electric Vacuum Pump Refrigerant R410a R134a HVAC Deep Vane Air Conditioner w/ 1/4" Flare Inlet Port Inlet Port: 1/4" Flare, Warm note: 1)Pressure Scale:0~400psi, 0~140psi 2)Length of hose:1.2m Red:1/4''-1/4'' Yellow:1/4''-1/4'' Blue:1/4''-1/4'' Please make sure your manifold gauge is in accordance with this size. Any question in using, please contact seller first. High Efficiency and Low Noise, Heavy-duty Aluminum Alloy Casing, Oil Drain Plug Positioned at Bottom of Oil Reservoir,Internal High Volume Cooling Fan for Extended U Exhaust Port with Exhaust Cap, Direct Drive Motor Allowing Easy Starting Which is Maintenance Free Oil Sight Glass For Monitoring Oil Levels, ON/OFF Switch Non Slip Cushion Handle, Comes With a Bottle of Vacuum Oil