Quick connect fittings are also known as TiteGrip fittings, Mur-lock fittings, John Guest fittings, and JG push-in fittings. Quick connect fittings do not require special tools for installation and are designed to create a firm grip and tight seal on different types of tubing. To ensure a long term connection, it is best to use a release tool to properly affix the collet to the tubing. Quick connect fittings can be used on plastic tubing, copper tubing, stainless steel tubing, etc. See more information on quick connect fittings below.