100-Pack Drip Irrigation Barb Adapter Coupling 1/8" - 1/4" Lateral Tubing Line Connector Insert for Hydroponics - Rain, Garden Watering Products specifications Operating pressure: up to 30 PSI Color: black Use with 1/4” micro tubing, 1/4" drip line and 1/4" soaker hose (.140 ID to .170 ID) Material: Acetal 1/4” Barbed Drip Fittings are used in the installation of all brands of 1/4” micro tubing, 1/4" drip line and 1/4" soaker hose (.140 ID to .170 ID). The fittings are pushed into the inside of the tubing for a very tight-fit connection. They can be used for a two-way layout or for a three-way layout of the different tubing. The fittings can also be used to attach the micro tubing to 1/2” or 3/4” drip tubing. They are made of high-impact plastic and have the largest inside diameter in the industry with a higher flow rate capability and lower head loss. Features Sharp-barb design for secure and tight-fit installation without glue or clamps Fits all brands of 1/4” micro tubing , 1/4" drip line and 1/4" soaker hose with .140 ID to .170 ID One-piece construction Made of high-impact, high-strength, UV-resistant plastic for durability and long life Large inside diameter for maximum flow