Upgrade your tractor or trailer with our Candy Red Deluxe Screw-On Aluminum Air Valve Knob. The large screw-on knob features a durable stainless steel plaque and a vibrant candy red finish, adding a touch of style to your vehicle. This versatile knob fits most makes and models, making it a practical and eye-catching addition to your air valve system. Sold individually, this deluxe knob is a simple and affordable way to enhance the look and functionality of your vehicle's air valve.