Push to Connect Fittings simply push tubing in and save up to 75% of the assembly time of standard compression fittings. Hold two fingers on the insert and pull the tubing out, no tools are required. REUSABLE, connect and disconnect numerous times. FULL FLOW DESIGN provides up to 60% more flow area than conventional fittings with internal tube supports. POSITIVE SEAL, no leaks. After the tubing is inserted, a seal is made.