Set up a compressed air system with the 1/2 in. Rapid air Master Kit with 2 air outlet locations. Single layer nylon tubing can be mounted on wall surfaces or in wall. Reduce shop clutter with this easy to install compressed air piping system. No glue, soldering or crimping needed. Simply cut the tubing to length and insert in the fitting. Tubing can be removed from the fitting with a push of the outer button. Easy to expand with more air outlet locations or modify later.