It is a professional HVAC tool designed to remove or replace Schrader valve cores (spool valves) from pressurized refrigeration systems without losing refrigerant.Key Specifications and FeaturesMaterial: Durable brass construction with a reinforced metal knob for professional use.Dual Compatibility: Includes 1/4" and 5/16" SAE adapters, making it compatible with systems using various refrigerants such as R22, R12, R410A, R32, and R404.Pressure Rating: Engineered to withstand pressures up to 50 bar, suitable for high-pressure systems like R410A and R32