The push to connect fitting is designed for convenient and quick connection and disconnection of pneumatic pipelines. It allows for using in the pneumatic system. Made with copper materials, quick release pneumatic connector is robust and reliable for long-term use. Features -Color:Multi -Material:Copper -Size:4.33X3.00X1.50cm/1.70X1.18X0.59in -Size:3.70X1.30X1.30cm/1.45X0.51X0.51in -Size:4.50X3.00X1.50cm/1.77X1.18X0.59in -Push to connect fitting allows for quick release pneumatic connections, more convenient to use. -Quick release pneumatic connectors are efficiently easy to use, simple to install and use. -These fittings are made with copper materials for durability and reliability. -The connectors are versatile for pneumatic connection needs. Suitable for various pneumatic systems. -Featuring a quick release design, the push to connect fitting allows for easy connection and disconnection of pneumatic pipelines. Package list: 42 x Fittings (PEG 8-6,PU6MM, 8MM, Y6MM, Y8MM)