Nylon push to connect tube fittings offer easy installation of air lines; simply push tubing into fitting. No gluing or special tools needed for this 1/4" OD x 1/4" MNPT connector. These push to connect fittings are even reusable by simply pushing sleeve in and releasing the tubing. Great for garage or shop, these fittings allow for Maximum air flow and faster connection than standard compression fittings. Maximum working pressure of 150 PSI.