An industrial spark plug includes a central electrode with a central base formed of a nickel-based material and a central firing tip formed of an iridium-based material. A computer-implemented system is operated that delivers to a customer an option to utilize up to n of m selected products, where m and n are whole numbers and n is less than or equal to m. The invention further relates to corn seeds and plants produced by crossing plants of variety CV295879 with plants of another variety, such as another inbred line.