The Peterbilt 567 Air Valve Knob is a practical and reliable replacement knob for most makes and models. 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, allowing for easy installation and compatibility with various air valve systems. Engraved with the 567 logo, this knob adds a touch of style to your vehicle. With its high-quality construction and versatile design, the Peterbilt 567 Air Valve Knob is a must-have for any vehicle owner in need of a reliable replacement.