1/8" Equal size barbed union.  Connect two lengths of equal size tubing to create one longer continuous tube. Plastic/Nylon.  Tube fittings are a great way to interface with your tubing in a dependable and cost effective manner. Single barb, smooth gates and low profile tubing stops. Ideal applications for fittings include: fuel management systems, ink dispensing, lab chemicals, hydroponics, air lines, water lines computer cooling and many other applications. Temperature range: 50 to 150 Degrees Fahrenheit. Made in the USA.