The Trailer Parking Brake Pin Style Knob is a practical and reliable accessory designed for Peterbilt 359 and 370 Series trucks. 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 ensures secure and efficient parking brake operation, providing peace of mind for truck drivers. Upgrade your truck with this high-quality accessory that combines functionality and style.