DescriptionThese straight copper coupling fittings are made of copper, sturdy and durable, so you can buy and use them with confidence. These straight copper fittings are suitable for residential, commercial, plumbing, air conditioner and more, potable and safe to use.Features-Color:As Shown -Material:Copper -Size:1.70X1.70X2.69cm/0.67X0.67X1.06in - Inside diameter: 5/8 "(16.59mm/0.65 in); Thickness: 0.9mm - Made of copper material, copper coupling with good toughness, easy to weld, stable performance, long service life. - Straight copper coupling fittings are welding pipe adapters, fit for air conditioning and refrigeration. - Good replacement option. A perfect replacement for the air conditioner copper coupling broken or old. - Good craftsmanship, thick and strong can ensure not easy to break, straight copper fittings can be used for a long time. - Wide applications. Straight coupling fittings can be applied to hydraulic applications like refrigeration and HVAC equipment.