1. Excellent connector of the material Zinc Alloy with the patent jacket to make a high-end quality and suit for the 90% cars in the market. 2. Application of principles of aerodynamics design of high/low-temperature, weather resistance, acid and ozone-resistant. 3. Using outstanding weatherproof and wear proof rubber and achieving one million times wiping when tested in the factory. 4. Easy installation. Welcome to contact OEM Size: inch 14" 13" 14" 15" 16" 17" 18" 19" 20" 21" 22" 24" 26" 28" mm 350 325 350 375 400 425 450 475 500 525 550 600 650 700