This brass adapter is designed for use with R32 and R454B refrigerant systems in mini split air conditioning applications. The adapter features a 1/4 inch female to male reverse thread configuration that provides secure connections between various HVAC components. Constructed from durable brass material, this fitting offers reliable performance and consistent operation in professional working environments. The standard 1/4 inch SAE connections ensure compatibility with vacuum pumps, pressure gauges, and refrigerant hoses commonly used in HVAC maintenance. The reverse thread design helps maintain proper connection integrity and supports efficient system servicing procedures. This adapter is suitable for qualified technicians performing standard maintenance tasks on modern air conditioning systems that utilize R32 and R454B refrigerants. The product is supplied as a single adapter unit ready for professional use in appropriate HVAC applications.