Tube Fitting Kit, Connection Type NPT, Push-Fit, Compatible Tube Sizes Included 1/4 in, Material Brass, Number of Pieces 105, Specific Fitting Shapes Included Bulkhead Union, Connector, Elbow, Union, Union Tee, Maximum Operating Pressure 250 psi, Maximum Operating Temperature 160 Degrees F, Minimum Operating Temperature 0 Degrees F