Uxcell Straight Copper Coupling Fittings, 7/8 Inch ID Welding Joint for HVAC Air Conditioner, Pack of 5

What is this? Air conditioning and refrigeration accessories plumbing adapter, widely used to connect pipelines, such as HVAC air-conditioning devices, refrigeration or hydraulic applications, etc. Are there any advantages of the product? Made of copper with good toughness, easy to weld, stable performance and long service life. Light external surface, accurate size. How to use it? Replace the old coupling fitting, easy installation. What should I notice? Please confirm the inner diameter before ordering.

Uxcell Straight Copper Coupling Fittings, 7/8 Inch ID Welding Joint for HVAC Air Conditioner, Pack of 5 Package Content: 5pcs x Copper Coupling Fitting Inner Diameter: 7/8"(19mm / 0.75 inch) Length: 27.5mm / 0.63 inch Thickness: 1.5mm