The Hongsen HS-ML-M14*1.5 is a premium refrigerant connector specifically engineered for HVAC (Heating, Ventilation, and Air Conditioning) systems and refrigeration applications. With its precise metric threading of M14 x 1.5 mm, this connector facilitates an optimal fit and secure connections for refrigerant lines, enhancing the overall efficiency and reliability of HVAC systems. https://www.industrywaala.com/product/hongsen-taa0656-hs-ml-m14-x-15-r134a-quick-coupler-l-female-with-adapter