Description: 【Versatile Compatibility】: This universal coupler set supports the three most common interchange interfaces - I/M, ARO, and T-type, making it ideal for environments that require multiple plug types 【Comprehensive Set】: The 14-piece kit includes 2 universal air couplers with 1/4 inch FNPT, 2 universal air couplers with 1/4 inch MNPT (all with a body size of 1/4 inch), along with 6 air plugs of 1/4 inch MNPT and 4 air plugs of 1/4 inch FNPT. This comprehensive assortment caters to the most common size requirements in pneumatic systems 【Sturdy Construction】: Crafted from aluminum alloy, the coupler bodies feature a red coating while the sleeves are coated in black for enhanced durability and corrosion resistance. The plugs also boast a red-coated aluminum finish, ensuring long term performance even under demanding conditions 【Efficient Design】: Equipped with six locking balls inside each coupler, this design ensures a secure hold on the plugs during use. The push-to-connect mechanism allows for fully automatic quick coupling by simply inserting the plug into the coupler without needing to retract any sleeve 【Standardized Sizing】: With a thread size of 1/4" NPT across all components, this set adheres to industry standards for pneumatic connections, making it suitable for a wide range of tools and equipment commonly used in workshops and industrial settings Specification: Material: Aluminum Alloy Size Chart: 1/4''NPT Package Includes: 1x Coupler and Plug Set(14 Pieces) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.