This versatile pneumatic accessory is designed to optimize air compressor functionality by preventing air loss and maintaining system efficiency. Its copper construction ensures reliable operation under various conditions. The valve is easy to install and compatible with multiple air compressor models, making it a valuable addition to your tools. Features -Color:Golden -Material:Copper -Size:4.00X3.80X3.50cm/1.57X1.49X1.38in -Durable copper valve: constructed from copper, this valve offers durability and reliable performance, ensuring long term use without compromise - -free maintenance: the -free eliminates the need for regular lubrication, providing easy operation and clean air output -Direct drive for maximum efficiency: drive mechanism reduces energy loss, delivering faster and efficient performance for inflation tasks -Compact design for easy handling: its space-saving design makes it convenient for professionals working in tight or mobile environments -Silent operation technology: advanced noise reduction ensures minimal sound during use, creating a more pleasant working atmosphere Package list: 8 compressor check valves