Bosch's double platinum and fine wire spark plugs, which complements its OE fine wire Iridium plugs launched in 2011, rounds out the Bosch OE fine wire family of spark plugs. Features 360 degree continuous laser welding process design (promoting durability and long life), high ignitability and performance (giving reliable starts even in the coldest weather, according to the manufacturer), copper core center electrode and ground electrode, laser welded platinum inlay on the ground electrode, nickel-plated shell with rolled threads ensuring complete anti-seize and corrosion protection, ribbed insulator design prevents misfires, pre-gapped, and capatability with modern applications.