Comprehensive Set: This 45-piece air hose fittings kit includes 14 male air plugs, 14 female air plugs, 4 hex couplers, 4 hex joints, 4 female air couplers, and 4 male air couplers, plus 1 PTFE tape, covering all your essential needs for air tool connections. Durable Materials: Constructed with brass for hex couplers and connectors, and iron with a copper plating for other components, this kit offers enhanced corrosion resistance and durability under high pressure and wear conditions, ensuring long-lasting performance. Advanced Design: Featuring industrial-grade M/D type specifications with a four large-sized locking ball structure, these fittings provide a stable, leak-proof connection and support up to 300 PSI, facilitating easy installation and quick disconnection. Versatile Use: Ideal for various applications, these air compressor fittings connect seamlessly with air hoses, blow guns, nail machines, and more. They are compatible with most pneumatic tools and air pipes, suitable for both home and industrial environments. Reliable Service: Encounter an issue? No worries. Our dedicated customer service team is always ready to assist with any problems, ensuring a hassle-free experience with our air hose fittings kit. Features: The kit contains 14 male/female air plugs, 4 male/female air couplings, 4 hexagonal couplings/fittings, and 1 roll of PTFE tape. Constructed from durable materials, the hexagonal couplers and connectors are made of solid brass to prevent rust and enhance strength, while other connectors feature copper-plated iron cores capable of withstanding pressures up to 300psi and resisting corrosion. Designed for ease of use and safety, the air connectors include four large locking balls to secure the plug and prevent accidental disconnections. Quick connect design allows for tool-free installation, and th