This Brass Slip-Lok Fitting with Mist Nozzle works with 3/8 inch nylon mist tubing and connects in seconds with a simple insert and twist motion. The unique brass Slip-Lock design can be used with both low and high pressure (up to 160 PSI) systems as the coupling grips tighter when the pressure increases. Additionally, the coupling and tubing can be disassembled by simply compressing the ferule against the body and pulling away from the.. See full description for further details