[1/4 in Side Port for Service Gauge]Allows for easy connection of service gauges to monitor system pressures during recovery, evacuation, and charging. [Double O-Ring Ball Valve Seal]Double O-Ring Ball Valve Seal, Provides a leak-tight seal for precise vacuum testing, ensuring the system is free of contaminants before charging. [Designed for High-Pressure Refrigerants]This valve core removal tool built to withstand the high pressures of modern refrigerants like R410A, ensuring safe and reliable operation. [Vacuum-Rated]Vacuum-Rated to 20 microns. a proper seal and prevent leaks even under deep vacuum conditions. Maximize for fast recovery and evacuation. [Grab Cores with Confidence]The stem tip can be tightened or loosened to accommodates various valve core sizes, providing a secure grip for easy removal and installation., Manufacturer: Mcnhbdgg