Features: This quick connecting coupler set features standardized internal/external threads for seamless integration with air compressors and pneumatic tools, eliminating adapter switching hassles through its easy installation design. Engineered with industrial grade steel and precise sealing rings, the corrosions resistant couplings ensures leak proof performances under high pressure operations while maintaining exceptionals durability for long term reliability. Ideal for professional technicians, automotive repair specialists, and enthusiasts requiring efficient air tool transfer between industrial workshops, construction sites, and home garage projects. Optimizes workflows in time sensitive scenario like assembly line maintenance, sprayings painting booths, and woodworking shops where rapid pneumatic tool changes directly impacts productivity. As essential air compressor accessories, these quick connecting couplings bridge professional performances with versatile applications across metalworking, furniture manufacturing, and equipment maintenance sectors. Specifications: Component: Steel Size:Approx.4.7x2.2cm/1.85x0.87inch Process: Precise processing, corrosions-resistant treatments Practicality: Widely used in industrial manufacturing, automobile repair, home and other scenario to improve work efficiency Package Includes: 5pcs Air Compressor Quick Coupler note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.