RS PRO Brass Pneumatic Quick Connect Coupling, M5 Male Metric

You can use this connector on the supply side of your pneumatic system. The male screw thread on the back attaches to your hose, while the male quick-connect coupling on the front allows you to change tools with one hand for greater ease of use. There's also a built-in shut-off valve to prevent air leaks when the coupling isn't connected.

This product is highly versatile as it's compatible with Rectus 20 or 91 and standard Walther connections, meaning you can use it with your current setup. It's often used in laboratory and medical settings.