FREE SHIPPING! This is a set of four Bosch Platinum Spark Plugs, model number 4109. These spark plugs are made of high-quality platinum material and are manufactured in Germany by Bosch. They are designed to provide reliable ignition performance for car and truck engines, ensuring optimal fuel efficiency and power output. With free shipping included, this NOS (new old stock) product is a great deal for anyone in need of quality spark plugs for their vehicle.