1. REAL PROFESSIONAL COUPLING FACTORY 2. DOT, ISO, TS CERTIFICATION 3. COMPETITIVE PRICE ON THE QUICK COUPLING QUICK COUPLING:1. MATERIAL: PLASTIC, BRASS, PLASTIC AND BRASS2. SIZE: 4MM, 5MM, 6MM, 7MM, 8MM, 9MM, 10MM, 11MM, 12MM, 13MM, 14MM, 15MM, 16MM3. SHAPE: STRAIGHT, ELBOW, TEE, CROSS4. COLOUR: BLUE, BLACK, YELLOW, WHITE5,. PHOTO: quick coupling