The Emergency Parking Brake Pin Style Knob is a practical and reliable solution for Peterbilt 359 and 370 Series owners. Made from chrome plate billet aluminum, this knob fits a 5/16 inch shaft and is sold individually. Designed to fit most Peterbilt 359 and 370 Series makes and models, this knob ensures easy and secure parking brake operation. Its durable construction guarantees long-lasting performance, making it a must-have accessory for any Peterbilt owner.