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 both M-type 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. Versatile Use: The standardized fittings ensure broad compatibility with various pneumatic tools and equipment, such as air compressors, blow guns, and air nailers. Secure Connection: Engineered with a four-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 accessories 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.