Colder PMC1002 Acetal Tube Fitting, Coupler, Straight Thru, In-Line, 1/8" Flow Coupler x 1/8" NPT Male Coupler for connecting tubing in a straight run Coupler connects to tubing on one end and an NPT male connector on the other Acetal copolymer plastic for low moisture absorption and high tensile and flexural strength Working pressure of up to 120 psi Operating temperatures range from -40 to 180 degrees F