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.