Quick disconnect, simply push tubing in, no tools. Reusable, connect and disconnect numerous times. Full flow design, provides up to 60% more flow area than conventional fittings with internal tube supports. Self contained assembly, no loose parts, brass body and insert. Secure tube retention, pulling on tubing only serves to tighten the connection. Positive seal, no leaks. After tubing is inserted, seal is made. Working temperature: -10°F to 200°F.