The Pneumatic Push In Fitting Air Water Pipe is a pack of 12 straight connectors, each measuring 10mm in diameter. Made for use in pneumatic systems, these fittings provide a secure and reliable connection for air or water pipes. The push-in design makes installation easy and efficient, ensuring a leak-free seal. Ideal for various industrial and plumbing applications, this pack of connectors offers a convenient solution for connecting piping and tubing in pneumatic systems.