[FUNCTIONAL EFFICIENCY] This injector is an excellent choice for adding refrigerant oil or UV leak detection dye. It allows for oil addition by vacuum post-evacuation or by using refrigerant through the recharge system, housed in a rugged 2 oz. metal canister. [ROBUST DESIGN] Featuring robust connections of 1/4" SAE Male x 1/4" SAE Female and a pressure range of 600PSI-3000PSI, this injector is crafted for high-performance. It's perfect for adding oil or dye without extra refrigerant, making it a valuable tool for automotive AC repairs. [VERSATILE USAGE] Ideal for injecting oil into R12, R22, R134a systems, this tool facilitates the addition of 2 oz. of oil under pressure or during maintenance. It's an essential tool for AC services, enhancing the efficiency of air conditioning systems. [PREMIUM QUALITY] Constructed from superior aluminum alloy, this R12 AC oil dye injector is rigorously tested to reliability. Designed for professional use, it guarantees durability and in oil and dye injection into AC systems. [COMPLETE PACKAGE] The package includes 1 Pc x R12 Oil Injector. For any inquiries or issues, customer support is readily available to assist. This tool is a must-have for efficient and effective AC system maintenance.