HEVSTIL 5PCS Straight Coupling Copper Fittings 3/4 inch(19mm) Copper Pipe Welding Joint Connector Adapter For Air Conditioning

["Component: This 3/4-inch copper coupling is designed for connecting copper pipes in air conditioning and refrigeration systems, making it a vital part of installation or repair project","Reliable Performance: Crafted from copper with over 99.9% copper content, ensuring excellent thermal conductivity, easy soldering, and long-lasting","Precise Specifications for a Perfect Fit: Features an inner diameter of 19mm (3/4\"), a wall thickness of 0.8mm, and a length of 26mm; Package includes 5 straight couplings for your convenience","Installation:The adapter should be sealed using welding tools after the plumbing and welding joint has been cleaned.","Value and Versatility in One Pack: Get five couplings in one order, providing great value for professionals and DIYers"]