Features: Make of thick purpleness copper, corrosion resistance, no leakage, no fractures. Thickened nut have high hardness, no slipping, Enduring. Mechanical precise reaming, no burr, no leakage, more secure to use. Adopting double layer thickened hermal insulation cotton, which have the characteristics of heat insulation, shock absorption and not easy to age. Assembling this kits is quick and easy. Hose the low and highly pressure tubes together without manual welding. Specifically for small split air conditioning systems. Suitable for shopping malls, offices, homes, restaurants, ensuring efficient refrigeration performances. Specifications: Materials: purpleness copper Length: 2m(78.74inch)/3.0m(118.11inch)/5m(196.85inch)/7.0m(275.59inch) Low pressure pipe diameter: 10mm/0.39inch Highly pressure pipe diameter: 6.0mm/0.24inch Package Includes: 1set Hose Extension note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping!