This is an air compressor check valve, using copper materials, suitable for the connection of pipelines, compressor piston pumps and more. Compact size and light weight, it is easy to install, has reasonable design and practical functions, also easy to disassemble, save your time and efforts.With high toughness, it is not easy to deform or break for long time to use. Features - Color: golden.- Material: copper.- Size:4.00X3.50X3.00cm/1.57X1.38X1.18inch.- Application: 1.1KW.- Easy to install and disassemble with the simple structure, bringing you much more convenience to use and install. - Made of copper material, this air compressor check valve is sturdy and professional, can be used for long period of time. - Threaded design, can be installed and fixed more firmly, you can use rest assured. - Widely appliedto install or connect pipelines, compressor piston pumps, air pressure tanks and more. - Compact size and light weight, with high toughness, not easy to deform orbreak. Packing list: 1 x Air Compressor Valve