The Stainless Steel Accumulative Key Reset Fuel MPG Switch Plate is a practical and reliable product designed to enhance your Peterbilt truck's fuel efficiency. Made from durable stainless steel, this switch plate is built to last. With its unique accumulative key reset feature, you can easily track and reset your fuel MPG readings. Sold individually, this switch plate fits most Peterbilt makes and models, making it a versatile and convenient addition to your truck. Improve your fuel management with this high-quality switch plate.