- Function and operation: This valve core installation and removal tool grips the valve core to enable easy insertion into the inner valve core and controlled manipulation. It allows work without stopping the machine and without releasing refrigerant. - Premium quality construction: Made from thicker brass and rubber materials, with a metal button that features a non-slip design for durable use. The tool is easy to use and install and provides a strong seal for durability and safety. - Compatibility and use: Replacement tool for valve core installation. Fits 1/4 inch service ports and 5/16 inch cores. Enables quick and easy disassembly of valve cores, making maintenance practical and efficient. - Key features: Non-slip design increases hand friction, helping prevent overpowered valve handling. Probes are high quality, robust and durable, suitable for most devices. - Use scenarios: - Automotive air conditioning service: remove or replace valve cores quickly during repairs without stopping the system or venting refrigerant. - HVAC and refrigeration maintenance: disassemble valve cores in 1/4 inch service ports and 5/16 inch cores to access the system for testing or service. - Field service and on-site repairs: install or remove valve cores for rapid maintenance events without disrupting equipment operation.