This product is pure liquid refrigerant oil filling tube. It is no need to unhitch the refrigerant inside the system(the system does not need in vacuum condition) Suitable for filling up the automobile air conditioning refrigeration system of R134A(need to get help from a transfertool), R12, R22. The oil tank can be unscrewed. Refrigeration oil can be filled into the automobile air conditioning. High pressure, oil-resistant, durable, wear-resistant, corrosion-resistant, do not harden. Copper fittings. Instructions: Tighten the oil tank and connected it between the refrigerant bottle and the vehicle air conditioning. Turn on the on-off valve slowly and slightly, so that the oil can slowly and evenly flow into the automotive air conditioning Specifications: Material: Aluminum + Plastic Color: See pictures Working pressure: (600~3000)PSI Capacity: 2 ounces Screw thread: 1/4" outer thread(connects to oil tank)+1/4" inner thread(connects to tube) Size: Injector: 40 x 97mm/1.57" x 3.82" (D x L) Tube: 21cm/8.27" (L) No retail package Package Included: 1 x Car Oil+Dye Injector
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