Versatile Compatibility: Designed for R134A and R 12 refrigerant systems, this injectors works with all oil types including mineral oil, suitable for leak detection and oil / dye injections in A C applications Easy to Use Connector: Features a 1 / 4inch threaded connector for quick and secure attachment, ensuring efficient maintenance with hassle frees operations Ideal for A C oil and dye injections tasks Brass Construction: Built from brass to resist wear and, ensuring long terms durability and safe in demanding environments Wide Pressure Ranges: Operates between 600PSI to 3000PSI, robust for high pressure A C systems and safe oil or dye injections in various applications Large Refillable Tanks: Equipped with a 2oz ( 60ml) refillable tanks for fast and efficient oil or dye filling, making it perfect for quick maintenance of automotive and home A C systems, Manufacturer: FROMCEO