The push-in fittings (also called pneumatic push-in fittings, push-to-connect fittings, and one-touch fittings in some locations).
Inside the push-in fittings, stainless steel tube gripping claw, collar, and release sleeve (collet) are assembled to offer a quick hold and release mechanism to provide a low disconnection force for easy removal of the tubing with no tools necessary.
PUSH IN FITTINGS WITH METRIC TUBE.
EUROFIT push-to-connect fittings are designed for use with soft and stiff tubing, such as nylon and polyethylene tubing.
EUROFIT push-in fittings are designed for use with nylon and polyethylene tubing that accommodate metric tubing O.D. ranging from 4mm to 14mm