12 Pieces 1/4" NPT Air Coupler & Plug Kit, Air Compressor Hose Fitting Kit, Industrial Type D Quick Connector Set Features: KIT INCLUDES: 6pcs 1/4 mnpt plugs, 4pcs fnpt plugs, 1pcs mnpt coupler, 1pcs fnpt coupler, which can almost meet your basic needs. PREMIUM MATERIALS: Copper-plated steel structure, ultra-high-tech casting steel, with extremely strong and pressure-resistant, with anti-rust and anti-corrosion properties, long service life and more durable. STANDARD DESIGN: Industrial grade M/D type, the fitting is designed with four large locking balls for fixing and locking the plug to ensure a reliable connection, the maximum pressure of the air fitting and plug is 300psi, the basic body size is 1/4 inch. QUICK CONNECTION: Easy to install and quick disconnect, interchangeable/compatible with most manufacturers' coupler plugs, preventing air leaks and costly replacements. WIDELY USE: Air coupler kit for air tools, air compressors, air hoses, pneumatic nailers, pneumatic blow guns, high pressure washers. Specification: The industrial brass joint is a durable quick connect fitting, with a size of 1/4 inch and easy to use. High quality brass structure, with corrosion resistance and long service life. Widely used in fields such as air compressors, automated production, and tire installation. Suitable for heavy-duty applications and can be used in professional workplaces or home garages. Multi purpose, suitable for connection of Pneumatic tool, air compressors and high-pressure cleaning machines. The maximum working pressure is 300 psi, the maximum working temperature is 250 F, and it is sturdy and durable. Package Included 1pcs- 1/4" FNPT Copper plated coupler 1pcs-1/4" MNPT Copper plated coupler 4pcs- 1/4" FNPT Copper plated plug 6pcs-1/4" MNPT Copper plated plug 1. Key away from Fire 2. Due to includeing small parts, please keep away from Children under Three. 3. Please leave 5 star feedback if you're satisfied with our products and service, we will appreciate it 4. If the products you received was damaged or any more question, please feel free to contact us. _x000D_