The product is a set of three Bosch spark plugs with part number W175T1 0241235501 designed for Volkswagen VW vehicles. These vintage spark plugs are made of copper with a thread diameter of 14 mm and a hex size of 13/16 inches. They are resistant spark plugs with a resistor built-in, suitable for gasoline fuel type and a voltage of 12 V. Manufactured in Germany by Bosch, these spark plugs meet standard configuration and may contain chemicals subject to California Prop 65 warnings. Representative item set is shown. New old stock without original packaging. Some minor age or storage related pitting/corrosion on the outside surface which should not affect performance. Set weight 6 oz. Resistor; 13/16 in. Hex Size; 0.500 in. Thread Reach; 14mm Thread Diameter; Gasket Seat. Made in Germany. No returns on installed items or partial sets. Please review our business policies in our store for information regarding returns, shipping and warranties.