Tube fittings connect runs of tubing for in-line, offset, multi-port, and mounting configurations to other tubing sections, pipe, hose, and other fluid transfer components. Systems are typically configured with straight sections connected by fittings or specially formed connections and joints. Fitting construction and material specifications are application-dependent; user consultation with fitting suppliers is typical for optimization of component selection.  Fitting type, fitting ports, tube size, material, and options and features are important specifications to consider when searching for tube fittings.