Colder PLCD13004 Acetal Tube Fitting, Coupler, Shutoff, In-Line, Ferruleless, PTF, 1/4" Flow Coupler x 1/4" Tube OD Coupler for connecting tubing in a straight run Fitting connects to tubing on one end and has a coupler 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