☀ GOOD REPLACEMENT --- R134a valve core remover installer designs for using of servicing valves to remove and install the valve core R134 or R12 from a 1/4-inch male flare access fitting in AC systems without the loss of refrigerant. Excellent for replacing valve cores without discharging or reclaiming the system. ☀ HIGH & LOW PRESSURE QUICK COUPLER --- High pressure coupler (Red), with inner diameter 16 mm, and Low Pressure coupler (Blue) with inner diameter 13 mm. ☀ ADJUSTABLE --- The R12 valve core quick remover installer is adjustable to fit the different valve core. Good for vehicle/car/auto air condition, household air conditioner, HVAC Maintenance or repairing. ☀ WELL-DESIGN --- Built-in stainless-steel ball valve: the well-designed ball valve and threaded remover lets the user block off the system while changing the valves cores, allowing for no refrigerant loss. ☀ WHAT YOU GET ---1 set of Valve Core Quick Remover Installer. If you have any question, we will try our best to help you ensure a fast and effortless ac replacement process., Manufacturer: Aupoko