Feature: 1. 14PCS AIR COUPLERS AND PLUG KIT: With 1/4inch NPT male and female threads. This professional kit includes 4 universal push in connectors (2 male and 2 female) and 10 I/M industrial connector plugs (6 male and 4 female). 2. EXCELLENT PERFORMANCE: Premium green anodized accessories are made of premium aluminum alloy material, ensuring durability and long lasting performance. Compared to the weight of standard stainless steel and brass accessories, these accessories are much lighter in weight. The coupler is designed with six locking balls to secure and lock the plug for reliable connection, capable of withstanding high pressure from pneumatic tools and equipment without leakage. The maximum pressure is 300 pounds per square inch. 3. STRONG COMPATIBILITY: The universal quick connector has a fully automatic push connection design, as the connector sleeve is in the downward position, allowing for plug connection operation. These universal couplers accept all three common standardized plug types, Industrial (I/M), Automotive (T), and ARO (A). The coupler is compatible and interchangeable with most brands of coupler plugs. 4. WIDELY USED: Multifunctional couplers and plugs suitable for various applications, including car repair shops, body repair shops, construction sites, homes, and garages. Connect accessories to air hoses, air compressors, and pneumatic tools such as sanders, grinders, nail guns, spray guns, impact wrenches, inflatable accessories, etc. 5. FINE WORKMANSHIP: Well crafted in standard male and female threads, these connectors ensure a tight fit with your equipments, choose with confidence! Specification: Item Type: 1/4in NPT Air Coupler and Plug Kit Material: Aluminum Alloy Interface Thread: 1/4in NPT male and female threads Scope of Application: Connecting to compressors, pneumatic air tools, spray guns, etc.. Package List: 14 x Air Hose Fittings