The Emergency Parking Brake Pin Style Knob for Peterbilt 359 and 370 Series is a practical and durable solution for your truck's parking brake. Made of chrome plate billet aluminum, this knob fits a 3/8 inch shaft and is sold individually. It is designed to fit most Peterbilt 359 and 370 Series makes and models, providing a reliable and stylish upgrade for your vehicle's parking brake system. With its easy installation and high-quality construction, this knob is a must-have for any Peterbilt truck owner looking to enhance their vehicle's functionality and appearance.