Features • Durable Zinc Alloy Construction - Made from high-quality zinc alloy, ensuring excellent durability and high-temperature resistance for long-lasting performance • Reliable Performance - Professionally manufactured for stable characteristics and high reliability, making it an essential component for your pneumatic systems • Compact and Portable Design - The small size allows for easy storage and transportation, making it convenient to use wherever you need it • Versatile Application - Ideal for various air compressor systems, this fitting is designed for longevity, reducing the need for frequent replacements • Easy Replacement Process - Seamlessly replaces old or damaged components without complicated steps, ensuring quick and hassle-free installation Features: 1、Made of zinc alloy materials, which makes it more and high temperature resistance. 2、Profional manufacturing, which makes it have stable characteristic and high reliability. 3、With compact size, very easy to carry and store, easy to use, no complicated steps. 4、Can be widely used in the field of air comprors, and not easy to damage, do not need frequent replacement, very convenient. 5、A direct replacement for the old and broken one, which is very convenient, no complicated steps. Specification: Item Type: Air Compror Check Valve Material: Zinc alloy Drive Mode: Pneumatic Screw Size: Large Hole Diameter: Approx. 21mm / 0.8in (G1/2) Medium Hole Diameter: Approx. 19mm / 0.7in (G3/4) Small Hole Diameter: Approx. 10mm / 0.4in (G1/8) Package List: 4 x Air Compressor Check Valve Package List 4 x Air Compressor Check Valve