The Claber 91023 is a 1/2-inch (13-16mm) compression coupling. It is a valuable component in any irrigation system and can be used to connect two 1/2-inch main tube or hose sections. The connectors are made of high-quality polypropylene (PP) and are designed for easy installation and a leak-proof seal. The coupling features a push-in system that makes connecting to the main tube/hose pipe easy without needing tools. The connectors are a versatile and durable coupling used in various above-ground and underground irrigation systems. The coupling is also resistant to UV rays and chemicals, making it a long-lasting solution for your irrigation needs. They are made in Italy by Claber. Here are some of the benefits of using the Claber 91023 compression coupling: Easy to install, no tools required Compression fitting ensures a perfectly watertight seal Versatile and durable Made in Italy The Claber 91023 is an excellent choice for irrigation systems and will provide years of trouble-free service.