Air conditioning adapter is designed with copper structure, which is strong, does not deform, and can withstand a lasting service life. The adapters solve the problem of fluoride leakage injury, allow for quick tightening, suitable for different installation space. Features -Color:Golden -Material:Copper -Size:3.00X1.70X1.00cm/1.18X0.67X0.39in - Specification: Internal metric to external imperial, internal imperial to external metric, internal to external R410, internal R410 to external - Versatile usage: Perfect for converting air conditioning refrigeration system, - Durability and practicality: Crafted with copper materials for lasting use and excellent sealing capabilities. - User-friendly: Easy installation and operation, suitable for both diy enthusiasts and professionals. - Multiple functions: Allows for different conversions due to their different types, catering to various requirements. - cooling performance: Assures optimal functioning of the air conditioning system, delivering stable and efficient cooling results. Package list: 4 x adapters