The Chrome Air Valve Knob with Black Peterbilt Logo is a practical and stylish addition to any vehicle. Made of durable aluminum and treated with industrial hard chrome, this knob is built to last. It is available in both octagon and square shapes, fitting most makes and models. With its sleek design and high-quality construction, this air valve knob adds a touch of sophistication to your vehicle while providing easy and efficient control. Upgrade your vehicle's functionality and aesthetics with this reliable and versatile accessory.