RS PRO Straight Tube-to-Tube Adaptor, Push In 4 mm to Push In 6 mm, Tube-to-Tube Connection Style

Connect piping in your pneumatic system with one of these RS PRO straight tube-to-tube adaptors. It's made of tough polyoxymethylene (POM) plastic, so it's suitable for heavy-duty applications.
Both ends have a push-in style connection, which makes it easy to install or remove tubing. All you need to do is push a tube into one of the holes. When you're done, just push the sleeve to disconnect it from the fitting.
As part of the RS PRO range, these specialist adaptors have been tested for quality. Adaptors like these are often used inside workshops and repair shops to connect tubes used in compressed air cleaning. They're suitable for use with air only.