Engineered with explosions resistant brass construction, this fitting integrates seamlessly into standard refrigerant ports while providing enhanced grip and durability for repeated use Features a knurled anti slip knob for precise control, thickened sealing washers for airtights connection, and ergonomic design to frostbites during operations Perfect for safely adding refrigerant to split hvac units, maintaining commercial cooling systems, or servicing residential air conditioners in extreme temperatures Brass hvac Refrigerant Charging fitting with anti freeze design ensures leak proof and secure refrigerant handling during HVAC maintenance Ideal for HVAC technicians, enthusiasts, and appliance repair professional requiring refrigerant management tools for air conditioning systems, Manufacturer: Oxxggkao