Features: Premium copper aluminum construction ensures superior thermal conductivity and leak proof performances, suit for air conditioners using copper tubes. Features precisely engineered tube dimension with nut interfaces for secure connections in HVAC refrigerants line installations. Essential for professional HVAC technicians and DIY enthusiasts performing AC maintenance, repair, or split system upgrades. Optimizes refrigeration efficiency in residential and commercial settings including homes, offices, and servers room cooling systems. Pressure tested brass core and corrosion resistant materials ensures long term reliability under extreme temperature cycling conditions. Specifications: Component:Copper, aluminum Size: 1:Approx.300cm/118.11inch 2:Approx.400cm/157.48inch 3:Approx.500cm/196.811inch Tube:Approx.6.35x12.7mm/0.25x0.5inch Package Includes: 1Pc Connecting Pipe note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color about the item.