- Durable Construction: Built with a robust PBT housing, a POM release button, and a zinc alloy ferrule, this fitting is designed for high performance with an operating pressure range of 0 to 145 Psi. Enjoy high pressure resistance, corrosion resistance, and an extended service life. - Easy Push Lock Design: Experience hassle-free installation with our quick connect fittings. With just one touch, you can effortlessly connect the tube. The uniquely designed elliptical release ring allows for convenient removal, while the 360° rotation feature enables easy adjustment of tube direction after installation. - Versatile Applications: Suitable for a wide working temperature range of 32 to 140°F, this Straight Push Connectors kit is ideal for low-pressure hydraulic and pneumatic systems. Commonly used in general industrial maintenance, automotive assembly, and applications involving air brakes, air compressors, and air ride systems. - Flexible Sizing Options: This kit includes four different sizes of straight air line fittings (1/4, 5/16, 3/8, 1/2) to meet various emergency needs, making it easier to repair leaking air lines without searching for additional parts. This product combines durability, ease of use, and versatility, making it a reliable choice for professionals and DIY enthusiasts alike.