Description: 【Multi Function Application】: This Oil Dye Syringe is applicable to R12 and refrigeration systems. It is widely used in various automobile air conditioning systems and household air conditioning systems to meet a variety of needs. 【Efficient and Convenient】: Air Condition Coolant Filling Tube provides a quick and direct way to add refrigeration oil to the refrigeration system without disassembling system components. It is simple to operate, saving time and effort. 【Material】: The Oil Injector Adapter is made of premium aluminum material, which has wear resistance, stable performance in various environments, and long service life. 【Lightweight and Portable】: Car Oil Coolant Filler Tube Tool’s compact size and lightweight design make it convenient for portability, storage, travel or emergency use. 【Features】: The Oil Dye Syringe tool can control the filling amount, keep the system running stably, and protect your equipment at the same time. Size Chart: 10.5cmx4.9cm/4.13inchx1.93inch Package Includes:1 Air Condition Coolant Filling Tube Note: Please allow slightly errors 1-2cm differences due to manual measurement.