The Tractor Parking Brake Pin Style Knob is a practical and reliable accessory designed for Peterbilt 359 and 370 Series vehicles. Made from chrome-plated billet aluminum, this knob fits a 5/16 inch shaft and is sold individually. With its durable construction, it is compatible with most Peterbilt 359 and 370 Series makes and models. This knob provides a secure and comfortable grip, ensuring easy and efficient operation of the parking brake. Upgrade your tractor with this high-quality knob for enhanced functionality and peace of mind.