Premium Construction: Crafted from high-quality metal, these air hose fittings are engineered to resist rust and corrosion, ensuring extended durability and reliable performance in various industrial environments. Optimal Compatibility: Featuring a universal 1/4-inch NPT thread and a 1/4-inch body size, these fittings are designed to be compatible with standard M and D type connectors. They can withstand a maximum working pressure of 300 PSI, making them suitable for a wide range of applications. Comprehensive Kit: This set includes essential components for your air systems: one 1/4-inch NPT IM female coupler, one 1/4-inch NPT IM male coupler, one 1/4-inch NPT IM female plug, and one 1/4-inch NPT IM male plug, providing the necessary parts to start or continue your projects. Versatile Use: The standardized fittings ensure broad compatibility with various pneumatic tools and equipment, such as air compressors, air blow guns, and air nailers, catering to the needs of professionals and DIY enthusiasts. Secure Connection: Engineered with a 4-ball design, these fittings offer a robust connection that securely holds air tools and prevents air leakage, enhancing the efficiency and safety of your pneumatic systems. Color: As Shown Material: Metal Package Contents: 1 set of air hose fittings Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1–3 cm.