Strong brass construction, silver clip, durable and easy to damage. Compact design, built-in apron prevents air leakage, pressure up to 25 kg. Air can flow freely through the chuck even if the tire valve is not engaged. Easy to attach and replace, suitable for 8mm diameter hoses. Easy to use, press the clip, push and twist the air valve chuck into the valve stem until tight. Release the clip when your tire is fine. Suitable for air inflation systems, 4S workshops, inflatables, garages and industrial air lines. Product Description Thank you for shopping in our store! If you have any questions, do not hesitate to contact us. We will respond and resolve them within 24 hours. We will find an optimal solution for you! Product Feature: Material: Brass RoHS Compliant Easy to Use: 1. Press down on the clip, press down on the air valve chuck and rotate it into the valve stem until it is fully seated. 2. Release the clip when the tire is inflated. Package Included: 4 x Car Quick Release