High Pressure Operation: Car Air Conditioning Oil Injector is designed to handle high pressure systems, even when the air conditioning system is full of refrigerant. Unlike ordinary injectors that have difficulty withstanding high pressure, this tool can easily add refrigerant due to its pressure resistant design. Compatibility: This Oil Injector Tool can be used with a pressure gauge set or any vacuum or charging equipment, making it a versatile addition to your tool kit. Quality: The Oil Injector Tool Kit is made of metal and has a pure liquid oil filling tube for long term use. It is resistant to high pressure, oil, and wear, and will not harden over time. Wide Application: This Oil Dye Injector Kit can be used to add most air conditioning additives to our system, including oil, dye, etc. Easy to Use: car Oil Injector Auto Condensation Hose is easy to use and removable, saving time and effort. Size Chart: Filler tucked length 18.5cm/7.28inch Filler unfolded length 27cm/10.63inch Filler handle width 8.4cm/3.31inch Blue filling tube length 20.5cm/8.07inch Low pressure quick connector length 5cm/1.97inch Package Includes: 1 Car Air Conditioning Oil Injector kit (include Filler, quick connector, filling tube) Note: Please allow slightly errors 1-2cm differences due to manual measurement.