1/4" O.D tubing x 5/32" O.D tubing union branch reducer push to connect fitting is used for in-line distribution of air to three smaller diameter tubing connections at a right angle to the supply line. 1/4" O.D tubing x 5/32" O.D tubing union branch connector reducer push to connect fitting is made of strong thermoplastic (PBT) and stainless steel tube gripping claw. 1/4" O.D tubing x 5/32" O.D tubing union branch reducer push to connect fittings are a type of fitting that is easy to assemble and used for low-flow tubing applications.