This air conditioning oil injector is a professional repair tool, ideal for home office AC and car AC system repair and maintenance. It is designed with a 1/4" SAE female fitting and is compatible with most AC systems. The tool is made from high-quality aluminum alloy materials for durability and reliability. It features a 2oz oil tank capacity and a 1/4 inch SAE female connection. The product is suitable for use with R134A refrigerant and has a working pressure of 3000 PSI burst and 600 PSI max.